   Chapter 17, Problem 67E

Chapter
Section
Textbook Problem

# Consider the reaction 2 NO 2 ( g )   ⇌ N 2 O 4 ( g ) For each of the following mixtures of reactants and products at 25°C, predict the direction in which the reaction will shift to reach equilibrium.a. P NO 2 = P N 2 O 4 = 1.0   atm b. P NO 2 = 0.21   atm ,   P N 2 O 4 = 0.50     atm c. P NO 2 = 0.29   atm ,   P N 2 O 4 = 1.6     atm

(a)

Interpretation Introduction

Interpretation: The direction in which the reaction shifts to reach the equilibrium is to be predicted.

Concept introduction: The Le Chatelier’s principle is basically an equilibrium law. According to which the equilibrium always shifts in the direction which nullify the outside effects. The Le Chatelier’s principle states that the addition of the reactants shifts the equilibrium to the right, while the addition of product shifts the equilibrium to the left at constant temperature. It also states that the change in pressure shifts the equilibrium direction which opposes the effect of pressure that is backward to the higher pressure side.

Explanation

Explanation

The reaction is given as,

2NO2(g)N2O4(g)

Pressure change is given as,

P

(b)

Interpretation Introduction

Interpretation: The direction in which the reaction shifts to reach the equilibrium is to be predicted.

Concept introduction: The Le Chatelier’s principle is basically an equilibrium law. According to which the equilibrium always shifts in the direction which nullify the outside effects. The Le Chatelier’s principle states that the addition of the reactants shifts the equilibrium to the right, while the addition of product shifts the equilibrium to the left at constant temperature. It also states that the change in pressure shifts the equilibrium direction which opposes the effect of pressure that is backward to the higher pressure side.

(c)

Interpretation Introduction

Interpretation: The direction in which the reaction shifts to reach the equilibrium is to be predicted.

Concept introduction: The Le Chatelier’s principle is basically an equilibrium law. According to which the equilibrium always shifts in the direction which nullify the outside effects. The Le Chatelier’s principle states that the addition of the reactants shifts the equilibrium to the right, while the addition of product shifts the equilibrium to the left at constant temperature. It also states that the change in pressure shifts the equilibrium direction which opposes the effect of pressure that is backward to the higher pressure side.

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