(a) Explanation The given equation is, SiH 4 ( g ) → SiH 2 ( g ) + H 2 ( g ) It is given that the enthalpy of formation of SiH 2 that is Δ f H ο ( SiH 2 ) is 27 4 kJ mol − 1 . The enthalpy of formation of SiH 4 that is Δ f H ο ( SiH 4 ) is 34 .3 kJ mol − 1 . The enthalpy of formation of Si 2 H 6 that is Δ f H ο ( Si 2 H 6 ) is 80 .3 kJ mol − 1 . The chemical equation for the formation of SiH 2 is, Si + H 2 → SiH 2 , Δ f H ο = 27 4 kJ mol − 1 (1) The chemical equation for the formation of SiH 4 is, Si + 2 H 2 → SiH 4 , Δ f H ο = 34.3 kJ mol − 1 (2) The chemical equation for the formation of Si 2 H 6 is, 2Si + 3 H 2 → Si 2 H 6 , Δ f H ο = 80 (b) Interpretation Introduction Interpretation: The standard enthalpy change for the given reaction has to be calculated. Concept Introduction: Enthalpy is the internal heat content of the system. Under constant pressure, a system can do expansion work under the effect of energy supplied as heat known as enthalpy change of the system. The measure of amount of heat supplied to the system gives the enthalpy change of the system.

11th Edition

ISBN: 9780198769866

Author: ATKINS, P. W. (peter William), De Paula, Julio, Keeler, JAMES

Publisher: Oxford University Press

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Question

Chapter 2, Problem 2C.8P

(a)

Interpretation Introduction

Interpretation: The standard enthalpy change for the given reaction has to be calculated.

Concept Introduction: Enthalpy is the internal heat content of the system. Under constant pressure, a system can do expansion work under the effect of energy supplied as heat known as enthalpy change of the system. The measure of amount of heat supplied to the system gives the enthalpy change of the system.

(b)

Interpretation Introduction

Interpretation: The standard enthalpy change for the given reaction has to be calculated.

Concept Introduction: Enthalpy is the internal heat content of the system. Under constant pressure, a system can do expansion work under the effect of energy supplied as heat known as enthalpy change of the system. The measure of amount of heat supplied to the system gives the enthalpy change of the system.

Expert Solution & Answer

Chapter 2 Solutions

Atkins' Physical Chemistry

Ch. 2 - Prob. 2A.1ST Ch. 2 - Prob. 2B.1ST Ch. 2 - Prob. 2B.2ST Ch. 2 - Prob. 2C.1ST Ch. 2 - Prob. 2C.2ST Ch. 2 - Prob. 2D.1ST Ch. 2 - Prob. 2D.2ST Ch. 2 - Prob. 2A.1DQ Ch. 2 - Prob. 2A.2DQ Ch. 2 - Prob. 2A.3DQ

Ch. 2 - Prob. 2A.4DQ Ch. 2 - Prob. 2A.5DQ Ch. 2 - Prob. 2A.1AE Ch. 2 - Prob. 2A.1BE Ch. 2 - Prob. 2A.2AE Ch. 2 - Prob. 2A.2BE Ch. 2 - Prob. 2A.3AE Ch. 2 - Prob. 2A.3BE Ch. 2 - Prob. 2A.4AE Ch. 2 - Prob. 2A.4BE Ch. 2 - Prob. 2A.5AE Ch. 2 - Prob. 2A.5BE Ch. 2 - Prob. 2A.6AE Ch. 2 - Prob. 2A.6BE Ch. 2 - Prob. 2A.1P Ch. 2 - Prob. 2A.2P Ch. 2 - Prob. 2A.3P Ch. 2 - Prob. 2A.4P Ch. 2 - Prob. 2A.5P Ch. 2 - Prob. 2A.6P Ch. 2 - Prob. 2A.7P Ch. 2 - Prob. 2A.8P Ch. 2 - Prob. 2A.9P Ch. 2 - Prob. 2A.10P Ch. 2 - Prob. 2B.1DQ Ch. 2 - Prob. 2B.2DQ Ch. 2 - Prob. 2B.1AE Ch. 2 - Prob. 2B.1BE Ch. 2 - Prob. 2B.2AE Ch. 2 - Prob. 2B.2BE Ch. 2 - Prob. 2B.3AE Ch. 2 - Prob. 2B.3BE Ch. 2 - Prob. 2B.4AE Ch. 2 - Prob. 2B.4BE Ch. 2 - Prob. 2B.1P Ch. 2 - Prob. 2B.2P Ch. 2 - Prob. 2B.3P Ch. 2 - Prob. 2B.4P Ch. 2 - Prob. 2B.5P Ch. 2 - Prob. 2C.1DQ Ch. 2 - Prob. 2C.2DQ Ch. 2 - Prob. 2C.3DQ Ch. 2 - Prob. 2C.4DQ Ch. 2 - Prob. 2C.1AE Ch. 2 - Prob. 2C.1BE Ch. 2 - Prob. 2C.2AE Ch. 2 - Prob. 2C.2BE Ch. 2 - Prob. 2C.3AE Ch. 2 - Prob. 2C.3BE Ch. 2 - Prob. 2C.4AE Ch. 2 - Prob. 2C.4BE Ch. 2 - Prob. 2C.5AE Ch. 2 - Prob. 2C.5BE Ch. 2 - Prob. 2C.6AE Ch. 2 - Prob. 2C.6BE Ch. 2 - Prob. 2C.7AE Ch. 2 - Prob. 2C.7BE Ch. 2 - Prob. 2C.8AE Ch. 2 - Prob. 2C.8BE Ch. 2 - Prob. 2C.1P Ch. 2 - Prob. 2C.2P Ch. 2 - Prob. 2C.3P Ch. 2 - Prob. 2C.4P Ch. 2 - Prob. 2C.5P Ch. 2 - Prob. 2C.6P Ch. 2 - Prob. 2C.7P Ch. 2 - Prob. 2C.8P Ch. 2 - Prob. 2C.9P Ch. 2 - Prob. 2C.10P Ch. 2 - Prob. 2C.11P Ch. 2 - Prob. 2D.1DQ Ch. 2 - Prob. 2D.2DQ Ch. 2 - Prob. 2D.1AE Ch. 2 - Prob. 2D.1BE Ch. 2 - Prob. 2D.2AE Ch. 2 - Prob. 2D.2BE Ch. 2 - Prob. 2D.3AE Ch. 2 - Prob. 2D.3BE Ch. 2 - Prob. 2D.4AE Ch. 2 - Prob. 2D.4BE Ch. 2 - Prob. 2D.5AE Ch. 2 - Prob. 2D.5BE Ch. 2 - Prob. 2D.1P Ch. 2 - Prob. 2D.2P Ch. 2 - Prob. 2D.3P Ch. 2 - Prob. 2D.4P Ch. 2 - Prob. 2D.5P Ch. 2 - Prob. 2D.6P Ch. 2 - Prob. 2D.7P Ch. 2 - Prob. 2D.8P Ch. 2 - Prob. 2D.9P Ch. 2 - Prob. 2E.1DQ Ch. 2 - Prob. 2E.2DQ Ch. 2 - Prob. 2E.1AE Ch. 2 - Prob. 2E.1BE Ch. 2 - Prob. 2E.2AE Ch. 2 - Prob. 2E.2BE Ch. 2 - Prob. 2E.3AE Ch. 2 - Prob. 2E.3BE Ch. 2 - Prob. 2E.4AE Ch. 2 - Prob. 2E.4BE Ch. 2 - Prob. 2E.5AE Ch. 2 - Prob. 2E.5BE Ch. 2 - Prob. 2E.1P Ch. 2 - Prob. 2E.2P Ch. 2 - Prob. 2.1IA Ch. 2 - Prob. 2.3IA Ch. 2 - Prob. 2.4IA Ch. 2 - Prob. 2.5IA Ch. 2 - Prob. 2.6IA Ch. 2 - Prob. 2.7IA

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