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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

For the reaction

H 2 ( g ) + Br 2 ( g ) 2 HBr ( g )

Kp = 3.5 × 104 at 1495 K. What is the value of Kp for the following reactions at 1495 K?

a HBr ( g ) 1 2 H 2 ( g ) + 1 2 Br 2 ( g )

b. 2HBr ( g ) H 2 ( g ) + Br 2 ( g )

c. 1 2 H 2 ( g ) + 1 2 Br 2 ( g ) HB r ( g )

(a)

Interpretation Introduction

Interpretation: The equilibrium constant (Kp) for each of the given gas-phase reactions is to be stated.

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 pressure, it is represented Kp .

To determine: The equilibrium constant for the given reaction.

Explanation

Given

The stated reaction is,

H2(g)+Br2(g)2HBr(g)

The equilibrium constant (Kp) for the stated reaction is 3.5×104 .

At equilibrium, the equilibrium constant expression is stated as,

Kp=(PHBr)2(PH2)(PBr2)

Where,

  • Kp is the equilibrium constant.

The stated reaction is,

HBr(g)12H2(g)+12Br2(g)

At equilibrium, the equilibrium constant expression is stated as,

Kp1=(PH2)12(PBr2)12(PHBr)

Where,

  • Kp1 is the equilibrium constant for this reaction.

Simplify the above expression

(b)

Interpretation Introduction

Interpretation: The equilibrium constant (Kp) for each of the given gas-phase reactions is to be stated.

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 pressure, it is represented Kp .

To determine: The equilibrium constant for the given reaction.

(c)

Interpretation Introduction

Interpretation: The equilibrium constant (Kp) for each of the given gas-phase reactions is to be stated.

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 pressure, it is represented Kp .

To determine: The equilibrium constant for the given reaction.

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