   Chapter 15, Problem 8PS

Chapter
Section
Textbook Problem

An equilibrium mixture of SO2, O2, and SO3 at a high temperature contains the gases at the following concentrations: |SO2| = 3.77 × 10−3 mol/L, [O2] = 4.30 × 10−3 mol/L, and [SO3] = 4.13 × 10−3 mol/L. Calculate the equilibrium constant, Kc, for the reaction.2 SO2(g) + O2(g) ⇄ 2 SO3(g)

Interpretation Introduction

Interpretation: The equilibrium constant Kc for the given reaction has to be calculated.

Concept introduction:

Equilibrium constant- At equilibrium the ratio of products to reactants has a constant value. And it is represented by the letter K.

For a general reaction, aA+bBcC+dD

The equilibrium constant K = [C]c[D]d[A]a[B]b where a, b, c and d are the stoichiometric coefficients of reactant and product in the reaction.

Explanation

The balanced chemical equation for the given reaction is,

2SO2(g)+O2(g)2SO3(g)

The equilibrium constant for the reaction can be determined as follows,’

K = [SO3]2[SO2]2

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