Chapter 15, Problem 2PS

### Chemistry & Chemical Reactivity

10th Edition
John C. Kotz + 3 others
ISBN: 9781337399074

Chapter
Section

### Chemistry & Chemical Reactivity

10th Edition
John C. Kotz + 3 others
ISBN: 9781337399074
Textbook Problem

# Write equilibrium constant expressions for the following reactions. For gases, use either pressures or concentrations. (a) 3 O2(g) ⇄ 2 O3(g) (b) Fe(s) + 5 CO(g) ⇄ Fe(CO)5(g) (c) (NH4)2CO3(s) ⇄ 2 NH3(g) + CO2(g) + H2O(g) (d) Ag2SO4(s) ⇄ 2 Ag+(aq) + SO42−(aq)

(a)

Interpretation Introduction

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

Concept Introduction: At equilibrium the concentration of the reaction and the product is equated to a constant K, where K is known as the equilibrium

If a reaction is as aA+bBcC+dD ,

The equilibrium constant K=[C]c[D]d[A]a[B]b

Explanation

The equilibrium constant for the reaction can be calculated as,

3O2(g)â€‰â€‰â€‰â‡„â€‰â€‰2O3(g)â€‰â€‰

The product concentrations appear in the numerator and reactant concentrations appear in the denominator. Each concentration should be raised to a power equal to the stoichiometric coefficient in the balanced equation.

The equilibrium constant for the above reaction is given below,

Kcâ€‰â€‰=â€‰â€‰[O3]2â€‰â€‰

(b)

Interpretation Introduction

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

Concept Introduction: At equilibrium the concentration of the reaction and the product is equated to a constant K, where K is known as the equilibrium

If a reaction is as aA+bBcC+dD ,

The equilibrium constant K=[C]c[D]d[A]a[B]b

(c)

Interpretation Introduction

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

Concept Introduction: At equilibrium the concentration of the reaction and the product is equated to a constant K, where K is known as the equilibrium

If a reaction is as aA+bBcC+dD ,

The equilibrium constant K=[C]c[D]d[A]a[B]b

(d)

Interpretation Introduction

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

Concept Introduction: At equilibrium the concentration of the reaction and the product is equated to a constant K, where K is known as the equilibrium

If a reaction is as aA+bBcC+dD ,

The equilibrium constant K=[C]c[D]d[A]a[B]b

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