Chapter 21, Problem 21.197QP

(a)

Interpretation Introduction

Interpretation:

The balanced equation for the following reaction has to be written.

$S{O}_2^{}{}_{(g)}+H_2{S}_{(aq)}\stackrel{}{\to }$

Concept introduction:

• There is a Law for conversion of mass in a chemical reaction i.e., the mass of total amount of the product should be equal to the total mass of the reactants.
• The concept of writing a balanced chemical reaction is depends on conversion of reactants into products.
• First write the reaction from the given information.
• Then count the number of atoms of each element in reactants as well as products.
• Finally obtained values could place it as coefficients of reactants as well as products.
• Loss of electron and loss of Hydrogen in a compound is oxidation - the compound is oxidized.  Gain of electron, gain of Oxygen in a compound is reduction-the compound is reduced.
• Oxidation reduction and reduction reaction occur simultaneously in same reaction.

(b)

Interpretation Introduction

Interpretation:

The gram of the sulphur produce in the given reaction has to be calculated.

Concept introduction:

Ideal gas is the most usually used form of the ideal gas equation, which describes the relationship among the four variables $\text{P, V, n, and T}\text{.}$  An ideal gas is a hypothetical sample of gas whose pressure-volume-temperature behavior is predicted accurately by the ideal gas equation.

$\text{PV = nRT}$