Chapter 13, Problem 71E

Interpretation Introduction

Interpretation:

The value of $\text{ΔrH}°$ needs to be calculated from the $\text{ΔrH}°$ of reactant and products and van’t Hoff equation and the values needs to be compared.

Concept introduction:

The value of $\text{ΔrH}°$ for a chemical reaction can be calculate with the help of standard $\text{ΔrH}°$ values of reactant and product molecules.

$\text{ΔrH° = ΔrH°(product) - ΔrH°(reactant) }$

The Van’t Hoff equation can be show as

$\text{ln}\left(\frac{\text{K1}}{\text{K2}}\right)\text{ = }\frac{\text{ΔrH°}}{\text{R}}\left(\frac{\text{1}}{\text{T2}}\text{-}\frac{\text{1}}{\text{T1}}\right)$

With the help of the equation, one can calculate the equilibrium constant at different temperature values.