   Chapter 13, Problem 33E

Chapter
Section
Textbook Problem

# Write expressions for K and Kp for the following reactions.a.   2 N H 3 ( g ) + CO 2 ( g ) ⇌ N 2 CH 4 O ( s ) + H 2 O ( g ) b. 2NBr 3 ( s ) ⇌ N 2 ( g ) + 3 Br 2 ( g ) c.   2KClO 3 ( s ) ⇌ 2 KCl ( s ) + 3 O 2 ( g ) d. CuO ( s ) + H 2 ( g ) ⇌ Cu ( l ) + H 2 O ( g )

(a)

Interpretation Introduction

Interpretation: The expression for K and Kp for the given reactions is to be determined.

Concept introduction: The state when the reactants involved in a chemical reaction and the products formed in the reaction exist in concentrations having no further tendency to change is known as an equilibrium state of the reaction. When the equilibrium constant is expressed in terms of concentration, it is represented K . When the equilibrium constant is expressed in terms of pressure, it is represented Kp .

To determine: The expression for K and Kp for the given reaction.

Explanation

Given

The stated reaction is,

2NH3(g)+CO2(g)N2CH4O(s)+H2O(g)

At equilibrium, the equilibrium constant expression (K) is stated as,

K=ConcentrationofproductsConcentrationofreactants

Where,

• K is the equilibrium constant.

The solid components do not affect the value of the equilibrium constant.

For the given reaction, the equilibrium constant expression (K) is,

K=[H2O][NH3]2[CO2]

The expression for Kp the given reaction.

The expression for Kp is as follows

(b)

Interpretation Introduction

Interpretation: The expression for K and Kp for the given reactions is to be determined.

Concept introduction: The state when the reactants involved in a chemical reaction and the products formed in the reaction exist in concentrations having no further tendency to change is known as an equilibrium state of the reaction. When the equilibrium constant is expressed in terms of concentration, it is represented K . When the equilibrium constant is expressed in terms of pressure, it is represented Kp .

To determine: The expression for K and Kp for the given reaction.

(c)

Interpretation Introduction

Interpretation: The expression for K and Kp for the given reactions is to be determined.

Concept introduction: The state when the reactants involved in a chemical reaction and the products formed in the reaction exist in concentrations having no further tendency to change is known as an equilibrium state of the reaction. When the equilibrium constant is expressed in terms of concentration, it is represented K . When the equilibrium constant is expressed in terms of pressure, it is represented Kp .

To determine: The expression for K and Kp for the given reaction.

(d)

Interpretation Introduction

Interpretation: The expression for K and Kp for the given reactions is to be determined.

Concept introduction: The state when the reactants involved in a chemical reaction and the products formed in the reaction exist in concentrations having no further tendency to change is known as an equilibrium state of the reaction. When the equilibrium constant is expressed in terms of concentration, it is represented K . When the equilibrium constant is expressed in terms of pressure, it is represented Kp .

To determine: The expression for K and Kp for the given reaction.

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