Chapter 23, Problem 23.80P

Interpretation Introduction

Interpretation:

Value of $\Delta H_{rxn}^o$ has to be determined for the reaction $CuC{l}_2\cdot 2H_{2}O\left(s\right)\underset{}{\rightleftharpoons }CuC{l}_2\cdot H_{2}O\left(s\right)\text{ + }{H}_{2}O\left(g\right)$.

Concept Introduction:

van’t Hoff equation is given below,

  $\text{ln}\frac{{\text{K}}_{\text{2}}}{{\text{K}}_{\text{1}}}\text{=}\frac{{\text{ΔH}}_{rxn}^o}{\text{R}}\left[\frac{T_2-T_1}{T_1{T}_2}\right]$

Here, K₁ and K₂ are the vapor pressures at the Kelvin temperatures T₁ and T₂.