   Chapter 13, Problem 16PS

Chapter
Section
Textbook Problem

Use the following data to calculate the enthalpy of solution of sodium perchlorate, NaClO4: Δ f H ∘ ( s ) = − 38 2 .9 kJ/mol and Δ f H ∘ ( aq ,   1   m ) = − 369. 5 kJ/mol

Interpretation Introduction

Interpretation: The enthalpy of solution of NaClO4 has to be identified.

Concept introduction:

Enthalpy of solution: In the process, the change in enthalpy while dissolving the solute in the solvent.

ΔsolnHo = [fHo(Product)]-[fHo(Reactant)]

Explanation

Given data:

Enthalpy of formation of NaClO4 in the solid state = - 382.9 kJ/molEnthalpy of formation of NaClO4 in the solution    = - 369.5 kJ/mol

• The enthalpy of solution:

Given:NaClO4(s)NaClO4(aq)ΔsolnHo = [fHo(Product)]-[

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