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Chemistry

9th Edition
Steven S. Zumdahl
ISBN: 9781133611097

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BuyFindarrow_forward

Chemistry

9th Edition
Steven S. Zumdahl
ISBN: 9781133611097
Textbook Problem

In which direction will the position of the equilibrium

2 HI ( g ) H 2 ( g ) + I 2 ( g )

be shifted for each of the following changes?

a. H2(g) is added.

b. I2(g) is removed.

c. HI(g) is removed.

d. In a rigid reaction container, some Ar(g) is added.

e. The volume of the container is doubled.

f. The temperature is decreased (the reaction is exothermic).

(a)

Interpretation Introduction

Interpretation: The reaction of decomposition of HI is given. The shift of equilibrium is to be predicted for given options.

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.

According to Le Chatelier’s principle “When equilibrium is subjected to change in variable, the shift in the equilibrium is produced in the direction that nullifies the effect of change.”

To determine: The shift of equilibrium for the given reaction when H2(g) is added.

Explanation

Explanation

The stated reaction is,

2HI(g)H2(g)+I2(

(b)

Interpretation Introduction

Interpretation: The reaction of decomposition of HI is given. The shift of equilibrium is to be predicted for given options.

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.

According to Le Chatelier’s principle “When equilibrium is subjected to change in variable, the shift in the equilibrium is produced in the direction that nullifies the effect of change.”

To determine: The shift of equilibrium for the given reaction when I2(g) is removed.

(c)

Interpretation Introduction

Interpretation: The reaction of decomposition of HI is given. The shift of equilibrium is to be predicted for given options.

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.

According to Le Chatelier’s principle “When equilibrium is subjected to change in variable, the shift in the equilibrium is produced in the direction that nullifies the effect of change.”

To determine: The shift of equilibrium for the given reaction when HI(g) is removed.

(d)

Interpretation Introduction

Interpretation: The reaction of decomposition of HI is given. The shift of equilibrium is to be predicted for given options.

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.

According to Le Chatelier’s principle “When equilibrium is subjected to change in variable, the shift in the equilibrium is produced in the direction that nullifies the effect of change.”

To determine: The shift of equilibrium for the given reaction when argon gas is added.

(e)

Interpretation Introduction

Interpretation: The reaction of decomposition of HI is given. The shift of equilibrium is to be predicted for given options.

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.

According to Le Chatelier’s principle “When equilibrium is subjected to change in variable, the shift in the equilibrium is produced in the direction that nullifies the effect of change.”

To determine: The shift of equilibrium for the given reaction when volume of reaction is doubled.

(f)

Interpretation Introduction

Interpretation: The reaction of decomposition of HI is given. The shift of equilibrium is to be predicted for given options.

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.

According to Le Chatelier’s principle “When equilibrium is subjected to change in variable, the shift in the equilibrium is produced in the direction that nullifies the effect of change.”

To determine: The shift of equilibrium when temperature is decreased (exothermic reaction) for the given reaction.

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