   Chapter 15, Problem 12PS

Chapter
Section
Textbook Problem

You place 0.0300 mol of pure SO3 in an 8.00-L flask at 1150 K. At equilibrium, 0.0058 mol of O2 has been formed. Calculate Kc for the reaction at 1150 K.2 SO3(g) ⇄ 2 SO2(g) + O2(g)

Interpretation Introduction

Interpretation:

The equilibrium constant Kc for the reaction under the given conditions has to be determined.

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 Kc=[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. Concentration value for solid substance is 1.

If the value of Kc and the concentration of any of the reactant of a reaction is known then the concentration of product can be determined by multiplying Kc with the concentration of reactant.

• Concentration =AmountofsubstanceVolume
• ICE (reaction initial concentration equilibrium) table is mainly used to calculate the value of K for a reaction. This table contains the concentration of reactant and product in various stage of reaction.
Explanation

The balanced chemical equation for the given reaction is,

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

The concentration of SO3=0.0300mol8.00L=0.00375mol/L

The concentration of O2(x)=0.0058mol8.00L=0.000725mol/L

By using these concentration ICE table for this reaction can be constructed as follows,

 Reaction                           2SO3(g)              ⇄          2SO2(g)                   +                          O2(g) Initial concentration(mol/L) 0

Still sussing out bartleby?

Check out a sample textbook solution.

See a sample solution

The Solution to Your Study Problems

Bartleby provides explanations to thousands of textbook problems written by our experts, many with advanced degrees!

Get Started

Little fat digestion takes place in the stomach. T F

Nutrition: Concepts and Controversies - Standalone book (MindTap Course List)

What is a redox reaction?

Biology: The Unity and Diversity of Life (MindTap Course List)

___ is the actual path length. (2.2)

An Introduction to Physical Science

What are genomes?

Human Heredity: Principles and Issues (MindTap Course List) 