OLEUM, WITH LESS THAN 30% FREE SULFUR TRIOXIDE reacts as a strong acid, as an oxidizing agent and as a dehydrating agent. Chars wood, sugar and many other organic materials on contact. The heat from these reactions may …Key Takeaways. The NO2 Lewis structure consists of a nitrogen atom bonded to two oxygen atoms.; The nitrogen atom has a lone pair of electrons, while the oxygen atoms have three lone pairs each.; The nitrogen-oxygen bonds are represented by single bonds, and the nitrogen-oxygen double bond is represented by a double bond.; The formal charges on …Final answer. Two reasonable Lewis structures for sulfurous acid (H2SO3) are given below. Add the formal charges to each atom. -0 -0-H - -H :0: :0 H H Which of the following represents the best Lewis structure for dinitrogen oxide? Support your answer with the Lewis structures and formal charges assigned to each atom for these molecules. EN: …The discussion of lewis structure The lewis structure for h2so3 The lewis structure for H2SO3 The lewis structure for H2so3 The lewis structure for h2SO3 …Sulphurous Acid (H2SO3) - Sulphurous Acid is the chemical name of H2SO3. Visit BYJU'S to understand the properties, structure and uses of Sulphurous Acid (H2SO3) explained by India's best teachers.Lewis Structures. Page ID. A Lewis Structure is a very simplified representation of the valence shell electrons in a molecule. It is used to show how the electrons are arranged around individual atoms in a molecule. Electrons are shown as "dots" or for bonding electrons as a line between the two atoms. The goal is to obtain the "best" …Lewis structure for H2SO3 Lewis structure for h2so3 Lewis structure for Sulfurous acid Lewis structure for Sulfurous acid compound Lewis structure for...The central hallmark of the question and the confusion was why a ten electron configuration would adopt a sp3 configuration more reflective of an octet. This was a source of confusion that goes back to Gilbert Lewis who originally proposed the below structure fitting of a sp3 hybridization (model 2):H2SO3 lewis structure has a Sulfur atom (S) at the center which is surrounded by one Oxygen atom (O) and two O-H groups. There is a double bond …A step-by-step explanation of how to draw the K2SO4 Lewis Dot Structure.For K2SO4 we have an ionic compound and we need to take that into account when we dra...Jun 22, 2023 · Step 2: Select the central atom. For selecting the center atom, you have to remember that the atom which is less electronegative remains at the center. (Remember: If hydrogen is present in the given molecule, then always put hydrogen outside.) Now here the given molecule is H2SO3 and it contains hydrogen atoms (H), sulfur atom (S) and oxygen ... The Lewis structure of SEO3 consists of one sulfur atom bonded to three oxygen atoms. The central sulfur atom in SEO3 has a lone pair of electrons. The Lewis structure helps in understanding the bonding and electron arrangement in a molecule. SEO3 is a polar molecule due to the presence of a lone pair on the central atom.The structure of phosphorous acid, H3PO3. ... When sulfur dioxide is dissolved in water, an acidic solution results. This has long been loosely called a sulfurous ...Draw the Lewis structure for SiH4 and give the following: a. the molecular shape b. the electron pair geometry at the central atom c. the hybridization of the central atom; Draw the Lewis structure for BrF5 and determine the following: a. the molecular shape b. the electron pair geometry at the central atom c. the hybridization of the central atomLewis structure of H2SO3 (or Sulfurous acid) contains the Sulfur (S) atom which is double bonded with one Oxygen (O) atom as well as single bonded with two O-H groups. The Sulfur atom has one lone pair while all the Oxygen atoms have 2 lone pairs. Let's draw and understand this lewis dot structure step by step.Steps To properly draw the H 2 SO 3 Lewis structure, follow these steps: #1 Draw a rough sketch of the structure #2 Next, indicate lone pairs on the atoms #3 Indicate formal charges on the atoms, if necessary #4 Minimize formal charges by converting lone pairs of the atoms #5 Repeat step 4 if necessary, until all charges are minimizedThis compound is comprised of three elements: hydrogen, sulfur, and oxygen. The molecular formula shows that there are a total of two hydrogen atoms, a single sulfur atom, and three oxygen atoms....Lewis structure of H 2 SO 3 The lewis structure of H 2 SO 3 contains one double bond and four single bonds, with sulfur in the center, and two hydrogens and three oxygens on either side. There are two lone pairs on each oxygen atom, one lone pair on the sulfur atom, and the hydrogen atom does not have any lone pair.2023-10-07. Description. Sulfurous acid appears as a colorless liquid with a pungent burning sulfur odor. Corrosive to metals and tissue. CAMEO Chemicals. Sulfurous acid is a sulfur oxoacid. It is a conjugate acid of a hydrogensulfite. It is a tautomer of a sulfonic acid. ChEBI.Sulfite ion is a weak base, but does undergo some hydrolysis to produce basic solutions. In acidic solution, the equilibria are shifted to form sulfurous acid, resulting in the evolution of SO2 gas. Sulfur dioxide is a colorless gas with a characteristic choking odor. SO2−3 (aq) +H2O(l) ↽−−⇀ HSO−3 (aq) +OH−(aq) SO 3 2 − ( aq ...The Lewis structure is made from three units, but the atoms must be rearranged: 103. The molecular dipole points away from the hydrogen atoms. 105. The structures are very similar. In the model mode, each electron group occupies the same amount of space, so the bond angle is shown as 109.5°. In the “real” mode, the lone pairs are larger ...First, we count the total valence electrons for the HSO3- lewis structure. The three constituents of HSO3- lewis structure are S, O, and H. the valence electrons for S, O, …A step-by-step explanation of how to draw the CH3F Lewis Dot Structure (Fluormethane).For the CH3F structure use the periodic table to find the total number ...Study with Quizlet and memorize flashcards containing terms like 8.1, Part A Ca Draw the Lewis dot structure for Ca. Show the formal charges of all atoms in the correct structure. To change the symbol of an atom, double-click on the atom and enter the letter of the new atom., Part B P Draw the Lewis dot structure for P. Show the formal charges of all …Jun 22, 2023 · Step 2: Select the central atom. For selecting the center atom, you have to remember that the atom which is less electronegative remains at the center. (Remember: If hydrogen is present in the given molecule, then always put hydrogen outside.) Now here the given molecule is H2SO3 and it contains hydrogen atoms (H), sulfur atom (S) and oxygen ... HSO 4 − ( aq) + H 2 O ( l) ↽ − − ⇀ H 2 SO 4 ( aq) + OH − ( aq) with K b = 1 × 10 − 15. Sulfate ion is a very weak base, while HSO 4 − is a fairly strong acid, with K a = 0.01. On the other hand, H 2 SO 4 is a very strong acid. Because it is such a weak base, sulfate ion undergoes negligible hydrolysis in aqueous solution.Chemistry questions and answers. • Two reasonable Lewis structures for sulfurous acid (H2SO3) are given. Add the formal charges to each atom. Which structure better describes the actual bonding in a molecule of H2SO3? Why? S—0H -H :0—5 :0: :0: H.Símbolos de Lewis. Usamos símbolos de Lewis para descrever as configurações eletrônicas de valência de átomos e íons monoatômicos. Um símbolo de Lewis consiste em um símbolo elementar cercado por um ponto para cada um de seus elétrons de valência: A Figura 7.9 mostra os símbolos de Lewis para os elementos do terceiro período da ... Sulfurous Acid. Sulfurous acid has the formula H2 SO 3 and the molecular weight of 82.075 g/mol. Its CAS number is 7782-99-2. There is no clear evidence that sulfurous acid exists in solution, but the molecule has been detected in the gas phase. The conjugate bases of this elusive acid are, however, common anions: bisulfite (or hydrogensulfite ...The Lewis dot structure for Cl2, the chemical formula for chlorine gas, is written with two Cl symbols, each of which is surrounded by three pairs of dots, connected by a single line.Selenious acid is the acid form of sodium selenite, a form of selenium. Selenium is an essential trace element and antioxidant. It is a cofactor metabolic enzyme regulation. It also plays an important role in maintaining the general health of tissue and muscle and has antioxidant properties. Selenium is a component of glutathione peroxidase ... Jul 1, 2013 · A step-by-step explanation of how to draw the H2SO3 Lewis Structure (Sulfurous acid). When we have an H (or H2) in front of a polyatomic molecule (like CO3, SO4, NO2, etc.) we know that it's an... A step-by-step explanation of how to draw the K2SO4 Lewis Dot Structure.For K2SO4 we have an ionic compound and we need to take that into account when we dra...If you’re a resident of Hoover, Alabama, you know how important it is to have a reliable car. Whether it’s for commuting to work or running errands around town, having a vehicle that runs smoothly is essential. That’s where Long Lewis Ford ...To sketch the HF Lewis structure by following these instructions: Step-1: HF Lewis dot Structure by counting valence electrons on the fluorine atom. Step-2: Lewis Structure of HF for counting valence electrons around the terminal hydrogen atom. Step-3: Lewis dot Structure for HF generated from step-1 and step-2.This problem has been solved! You'll get a detailed solution from a subject matter expert that helps you learn core concepts. See Answer. Question: Write Lewis structure for H2SO3 (H is bonded to O). Draw the molecule by placing atoms on the grid and connecting them with bonds. Include all lone pairs of electrons. Include all hydrogen atoms.The structure of hydrogen-sulfito complex trans-[RuII(NH3)4(SO3H)2] is also S-bonded, implying a 1,2 proton shift to give M{SO2(OH)}.(204). Sulfites and ...Sulfurous acid is a diprotic oxyacid with the molecular formula H2SO3. a) Draw a Lewis structure for sulfurous acid that has zero formal charge on every atom. b) Draw the Lewis structure for the ion that results from the removal of the first proton from sulfurous acid. Include all resonance structures that have zero formal charge on the central ...Commencer à s’entraîner. Dans cette fiche explicative, nous allons apprendre à identifier la forme des molécules à l’aide du modèle VSEPR. Le modèle de répulsion des paires d’électrons de valence (VSEPR en anglais) peut être utilisé avec les schémas de structure de Lewis pour prédire les formes de différentes molécules.Sulfurous acid is a diprotic oxyacid with the molecular formula H2SO3. a) Draw a Lewis structure for sulfurous acid that has zero formal charge on every atom. b) Draw the Lewis structure for the ion that results from the removal of the first proton from sulfurous acid. Include all resonance structures that have zero formal charge on the central ... The discussion of lewis structure The lewis structure for h2so3 The lewis structure for H2SO3 The lewis structure for H2so3 The lewis structure for h2SO3 …In H2SO3 (sulfurus acid) lewis structure, there are two O-H bonds. Also, there is a one S=O bond. SUlfur atom has one lone pair. Sulfur atom is the center atom and there are no charges on atoms in H2SO3 lewis structure. The 2D chemical structure image of Sulfurous acid is also called skeletal formula, which is the standard notation for organic molecules. The carbon atoms in the ...Hydrogensulfite is a sulfur oxoanion. It has a role as a human metabolite, a Saccharomyces cerevisiae metabolite and a mouse metabolite. It is a conjugate base of a sulfurous acid. It is a conjugate acid of a sulfite. ChEBI.Sulfurous acid is a weak inorganic acid with the chemical formula H2SO3. It is formed when sulfur dioxide is dissolved in water. Therefore, it is also referred to as the aqueous solution of sulfur dioxide. Sulfurous acid is found as an intermediate formed during the formation of acid rain (by the reaction of sulfur dioxide with the moisture ...Jun 22, 2023 · Step 2: Select the central atom. For selecting the center atom, you have to remember that the atom which is less electronegative remains at the center. (Remember: If hydrogen is present in the given molecule, then always put hydrogen outside.) Now here the given molecule is H2SO3 and it contains hydrogen atoms (H), sulfur atom (S) and oxygen ... Expert Answer. (3) (a) (i) H2SO3 is stronger acid than HSO3- Since SO32- (conjugate base of HSO3-) much stronger base than HSO3- (conjugate base of H2SO3). If in a conjugate acid-base pair, if conjugate base is stronger, than the acid will be weaker vice-versa. (i …. For each of the following pairs, select the stronger acid.a) Draw the Lewis structure(s) for H2SO3 and SO32. Include lone pairs in your answer. Indicate all non zero formal charge on the atoms. b) Which of the two (H2SO3 or SO324) has resonance structures? Show all equivalent resonance structures for that moleculeUsing Formal Charge to Predict Molecular Structure. The arrangement of atoms in a molecule or ion is called its molecular structure.In many cases, following the steps for writing Lewis structures may lead to more than one possible molecular structure—different multiple bond and lone-pair electron placements or different arrangements of atoms, for instance.The compound below (Cl2O2) plays a role in ozone depletion in the stratosphere, where it serves as a reservoir of Cl atoms that catalyze the destruction of O3. Draw a Lewis structure for Cl 2 O 2 based on the arrangement of atoms shown above. There are 2 steps to solve this one.Draw the Lewis structure for CCl2F2 (carbon is the central atom) and determine the following: a. total number of valence electrons b. total number of electron groups c. electron geometry d. molecular shape e. molecular polarity f. major attractive force; Draw the Lewis structure for ClF3 and provide the following information. a. The acid molecules H2SO3, H2SO4, and H3PO4 are usually drawn using "Lewis structures" which exhibit the octet extension by 3d-orbitals on sulfur and phosphorus, respectively. Thus, S=O and P=O ...Are you looking for a comfortable and stylish recliner to add to your home? Look no further than the John Lewis recliner. This high-quality recliner is designed to provide you with maximum comfort and style, while also offering a range of a...Print H2SO3: Definition & Lewis Structure Worksheet 1. Which of the following is the best Lewis structure for sulfurous acid? Hint: Sulfurous acid has 26 valence electrons and the best structure ... 2 days ago · H2SO4 is a chemical formula of Sulfuric acid which is commonly known as Oil of Vitriol. It’s a mineral acid composed of elements like oxygen, hydrogen, and sulfur. It has a molecular weight of 98.079 g/mol. H2SO4 works as an oxidizing and dehydrating agent. Furthermore, it’s diprotic in nature which holds the capacity of releasing two ... a. there is more than one allotropic form of a compound. b. more than one ionic form of a compound exists. c. a molecule's electronic structure is an average of all possible Lewis structures. d. more than one isotopic form of an element exists in the molecule. structures. . Bond length and bond strength are ________.Drawing the Lewis Structure for C 2 H 2 (Ethyne or Acetylene). For C 2 H 2 you have a total of 10 valence electrons to work with.. In drawing the Lewis structure for C 2 H 2 (also called ethyne) you'll find that you don't have enough valence electrons available to satisfy the octet for each element (if you use only single bonds). The solution is to share three …H2SO3: Definición y estructura de Lewis. El ácido sulfuroso tiene una fórmula química de H2SO3. Es conocido por sus propiedades blanqueadoras por lo que se utiliza para blanquear varios productos. En esta lección, aprenderemos sobre el ácido sulfuroso, algunos de sus usos y cómo dibujar su estructura de Lewis.Get the detailed answer: What are the resonance structures for sulfurous acid, H2SO3? ... H2SO3, is a weak diprotic acid (pKa,1=1.89 and pKa2 =(7.21 at 25oC). What is the pH of 0.121 mol/L H2SO3(aq) at 25oC? Sulfurous acid, H 2 SO 3, is a weak acid capable of providing two H + ions.Transcript: This is the H2SO3 Lewis structure: sulfurous acid. The key to understanding this Lewis structure is recognizing these two H's in front attached to a polyatomic ion. That makes it an acid. And these Oxygens here, the Hydrogens will attach to the outside of the Oxygens. So we'll put our Sulfur here in the middle, it's the least ... A step-by-step explanation of how to draw the CN- Lewis Dot Structure (Cyanide ion).Note: there should be brackets around the final Lewis Structure with a -1...46. Lewis Dot Structure of H2SO3| How to Draw Lewis Structures| Class 11 Chemistry| Chemical BondingQueries Solved in this videos:-1) lewis structure2) lewis...Jul 2, 2021 · About this video -Structure of H2SO3, known as Sulphurous acid.Happy Reading :) 2. + H. 2. O. Sulfur dioxide (SO 2) is averagely soluble in water and react with water to produce sulfurous acid (H 2 SO 3). H 2 SO 3 is a dibasic weak acid and partially dissociates to release H 3 O + ions. We will discuss about those in detail in this tutorial. We can write several equations to describe the generation of sulfurous acid and ...Sulfurous acid is a weak inorganic acid with the chemical formula H2SO3. It is formed when sulfur dioxide is dissolved in water. Therefore, it is also referred to as the aqueous solution of sulfur dioxide. Sulfurous acid is found as an intermediate formed during the formation of acid rain (by the reaction of sulfur dioxide with the moisture ...Long Lewis Ford in Hoover, Alabama is the premier destination for anyone looking to buy a car in Birmingham and its surrounding areas. In this article, we will explore why Long Lewis Ford is the best place to buy a car near Birmingham, Alab...This problem has been solved! You'll get a detailed solution from a subject matter expert that helps you learn core concepts. Question: • Two reasonable Lewis structures for sulfurous acid (H2SO3) are given. Add the formal charges to each atom. Which structure better describes the actual bonding in a molecule of H2SO3?First, we count the total valence electrons for the HSO3- lewis structure. The three constituents of HSO3- lewis structure are S, O, and H. the valence electrons for S, O, …2023-10-07. Description. Sulfurous acid appears as a colorless liquid with a pungent burning sulfur odor. Corrosive to metals and tissue. CAMEO Chemicals. Sulfurous acid is a sulfur oxoacid. It is a conjugate acid of a hydrogensulfite. It is a tautomer of a sulfonic acid. ChEBI. Sulfurous acid is a diprotic oxyacid with the molecular formula H X 2 S O X 3 \ce{H2SO3} H X 2 SO X 3 . a) Draw a Lewis structure for sulfurous acid that has zero formal charge on every atom. b) Draw the Lewis structure for the ion that results from the removal of the first proton from sulfurous acid.The lewis structure of H 2 SO 3 contains one double bond and four single bonds, with sulfur in the center, and two hydrogens and three oxygens on either side. There are two lone pairs on each oxygen atom, one lone pair on the sulfur atom, and the hydrogen atom does not have any lone pair.What is Sulphurous Acid? H 2 SO 3 is a chemical compound with yhe chemical name Sulphurous Acid. Sulphurous acid is also called Sulphur dioxide solution or dihydrogen trioxosulphate or trioxosulphuric acid. It is an intermediate species for producing acid rain from sulphur dioxide (SO 2 ).What is Sulphurous Acid? H 2 SO 3 is a chemical compound with yhe chemical name Sulphurous Acid. Sulphurous acid is also called Sulphur dioxide solution or dihydrogen trioxosulphate or trioxosulphuric acid. It is an intermediate species for producing acid rain from sulphur dioxide (SO 2 ).A Lewis dot structure for SeO3 is drawn with an Se in the center, with two lines connecting it to two Os and one double line connecting it to an O. The Os connected by single lines are both surrounded by six dots, while the other O has four...Properties of CH3F. It molar mass is 34.03 g/mol. The density of CH3F is 1.4397 g/L and 0.557 g/cm³ at saturated pressure and temperature. The melting point of CH3F is -137.8ºC and the Boiling point is -78.4ºC. Its vapor pressure is 3.3 MPa. Its IUPAC name is Fluoromethane. Name of Molecule. Fluoromethane.A skeletal structure for sulfurous acid (H₂SO₃) shown below. Starting from this structure, complete the Lewis structure that follows the octet rule on all atoms. World of Chemistry, 3rd edition. 3rd Edition. ISBN: 9781133109655.Nov 21, 2021The structure of phosphorous acid, H3PO3. ... When sulfur dioxide is dissolved in water, an acidic solution results. This has long been loosely called a sulfurous ...H2SO3 lewis structure has a Sulfur atom (S) at the center which is surrounded by one Oxygen ...A step-by-step explanation of how to draw the HClO3 Lewis Structure (Chloric Acid). When we have an H (or H2) in front of a polyatomic molecule (like CO3,...In this video we determine the type of chemical reaction for the equation SO2 + H2O = H2SO3 (Sulfur dioxide + Water).Since we have a two substances combining...The vapor pressure of H2SO4 is 0.001mmHg at 20 0 C. the pKa 1 and pKa 2 of H2SO4 are -2.8 and 1.9. so, from the value of pKa, we can say that it is a very strong acid. The viscosity of the acid is 26.7 centipoise (20 °C). The density of H2SO4 is, 1.8302g/cm 3. The molecular weight of sulfuric acid is 98.079 g/mol.
A step-by-step explanation of how to draw the H2O2 Lewis Dot Structure (Hydrogen peroxide). Note that the H2O2 Lewis structure is frequently used on tests a.... Trak powersports
Drawing the Lewis Structure for C 2 H 2 (Ethyne or Acetylene). For C 2 H 2 you have a total of 10 valence electrons to work with.. In drawing the Lewis structure for C 2 H 2 (also called ethyne) you'll find that you don't have enough valence electrons available to satisfy the octet for each element (if you use only single bonds). The solution is to share three …Dec 13, 2015 · $\ce{H2SO5}$ has the Lewis structure shown below: It is possible to assign the oxidation # of each atom by considering the electronegativities of the two atoms involved in each bond and assigning the bonding electrons to the more electronegative atom in each case. Oxygen atoms 3 and 4 are bonded to each other, so the bonding electrons are ... Bronsted Acid is an H+ donor, Bronsted Base is an H+ acceptor. Usually Bronsted Acids have an H bonded to a halogen or an oxygen. A base, usually OH- or H2O, will have a lone pair of electrons that forms a bond with an H+ on the acid. The proton essentially transfers from acid to base during an acid-base reaction. ChemGuy · 2 · Apr …Draw the Lewis structure and structural formula for: a) HCN b) SO3^2-Draw the Lewis Structure of the molecule C2H2Cl2 . Draw and explain the Lewis structure for H2CO3. Draw and explain the Lewis structure of COCl2. Draw and explain the Lewis structure for the molecule XeF4, which does not follow the octet rule.Identify the Lewis acid and Lewis base in each of the following reactions: $\ce{SO2(g) + H2O(l) = H2SO3(aq)}$ What I tried: A Lewis acid is an electron pair acceptor. A Lewis base is an electron pair donor. The other problems of this type involved cations or anions, so I was able to identify the cation as the Lewis acid and the anion as the ...Sep 7, 2020 · H2SO3: Definición y estructura de Lewis. El ácido sulfuroso tiene una fórmula química de H2SO3. Es conocido por sus propiedades blanqueadoras por lo que se utiliza para blanquear varios productos. En esta lección, aprenderemos sobre el ácido sulfuroso, algunos de sus usos y cómo dibujar su estructura de Lewis. Shopping online can be a great way to save time and money, but it can also be a bit daunting if you’ve never done it before. John Lewis is one of the most popular online retailers in the UK, so if you’re looking to buy something from them, ...Sulfuric (IV) acid ( United Kingdom spelling: sulphuric (IV) acid ), also known as sulfurous (UK: sulphurous) acid and thionic acid, [citation needed] is the chemical compound with the formula H2SO3. Raman spectra of solutions of sulfur dioxide in water show only signals due to the SO2 molecule and the bisulfite ion, HSO− 3. [1]Study with Quizlet and memorize flashcards containing terms like 8.1, Part A Ca Draw the Lewis dot structure for Ca. Show the formal charges of all atoms in the correct structure. To change the symbol of an atom, double-click on the atom and enter the letter of the new atom., Part B P Draw the Lewis dot structure for P. Show the formal charges of all …Question: H2SO3, is a weak oxyacid. Consider the most important Lewis structure for H2SO3. Note: Sulfur is the central atom, and each H atom is bonded to an oxygen atom. Which of the following statements is/are incorrect? Select all that apply. You may choose more than one, one, or none of the options. None of the atoms have an expanded octet.Draw the Lewis structure for SiH4 and give the following: a. the molecular shape b. the electron pair geometry at the central atom c. the hybridization of the central atom; Draw the Lewis structure for BrF5 and determine the following: a. the molecular shape b. the electron pair geometry at the central atom c. the hybridization of the central atom ১৫ মে, ২০২৩ ... Sulfurous acid is an oxoacid of sulphur, a weak inorganic acid with the chemical formula H2SO3. Learn its definition, uses, comparison with ...Majority of texts (at high school level) say that when SOX2 S O X 2 is dissolved in water sulphurous acid HX2SOX3 H X 2 S O X 3 is formed. However my text book states that it forms clathrate SOX2⋅6HX2O S O X 2 ⋅ 6 H X 2 O when dissolved in water, and can significantly exist as HX+ +HSOX3X− H X + + H S O X 3 X −. Sulfur …Like any other conjugate acid–base pair, the strengths of the conjugate acids and bases are related by pKa + pKb = pKw. Consider, for example, the HSO − 4 / SO2 − 4 conjugate acid–base pair. From Table 16.4.1, we see that the pKa of HSO − 4 is 1.99. Hence the pKb of SO2 − 4 is 14.00 − 1.99 = 12.01..
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