Chapter 17, Problem 17.130CP

Interperation:

Standard free energy of the reaction should be calculated from the given data.

Interpretation Introduction

Concept Introduction:

Standard free energy of reaction is related to equilibrium constant by the reaction
${\text{ΔG}}^o=-\text{RTlnK}$

To determine:

Calculate standard free energy at ${\text{25}}^{\text{o}}\text{C}$ for the reaction
$\text{PbCrO4(s)}\underset{}{\overset{}{\rightleftarrows }}{\text{Pb}}^{\text{2+}}({\text{aq)+CrO}}_{\text{4}}{}^{2-}(\text{aq)}$

Given:

${\text{K}}_{\text{sp}}$ = $2.8\times {10}^{-13}$

T= ${\text{25}}^{\text{o}}\text{C=25+273=298 K}$