Chapter 18, Problem 18.113QP

Interpretation Introduction

Interpretation:

The standard free energy of formation of ${\text{OH}}^{\text{-}}{}_{\left(\text{aq}\right)}$ has to be calculated and also this calculated value has to be compared with the value given in table.

Concept introduction:

Standard free energy change:

Standard free energy change is measured by subtracting the product of temperature and standard entropy change from the standard enthalpy change of a system.

$\begin{array}{l}{\text{ΔG}}^{\text{o}}\text{=}{\text{ΔH}}^{\text{o}}\text{-}{\text{TΔS}}^{\text{o}}\\ \text{where,}\\ {\text{ΔG}}^{\text{o}}\text{-}\text{standard}\text{free}\text{energy change}\\ {\text{ΔH}}^{\text{o}}\text{-}\text{standard}\text{enthalpy}\text{change}\\ {\text{ΔS}}^{\text{o}}\text{-}\text{standard}\text{entropy change}\text{and T}\text{-}\text{temperature}\text{.}\end{array}$

To calculate: The value of ${\text{ΔG}}^{\text{o}}{}_{\text{f}}$ for ${\text{OH}}^{\text{-}}{}_{\left(\text{aq}\right)}$