Physical Chemistry
Physical Chemistry
3rd Edition
ISBN: 9780321812001
Author: ENGEL, Thomas/ Reid
Publisher: Pearson College Div
Question
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Chapter 4, Problem 4.12NP

(a)

Interpretation Introduction

Interpretation:

The standard enthalpy of the reaction corresponding to the formation of TiCl4(l) at a temperature of 135.8°C needs to be deduced

Concept Introduction:

The enthalpy of reaction at temperature T is related to the standard enthalpy of reaction at 298 K by the following equation:

  ΔHR0(T) = ΔHR0(298K) + 298T ΔCpdT ------(1)where ΔCp=Cp(products)Cp(reactants) i.e. the difference in the heatcapacities of the products and reactants

(b)

Interpretation Introduction

Interpretation:

The standard enthalpy of formation of TiCl4(l) at a temperature of 25°C needs to be deduced

Concept Introduction:

The standard enthalpy change for a reaction ΔH0 is given in terms of the difference in the standard enthalpy of formation of the products and that of reactants.

i.e. ΔH0 = npΔHf0(products) - nrΔHf0(reactants)  ------(2)

Here, np and nr are the number of moles of the products and reactants

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