Chapter 18, Problem 3SEPP

Interpretation Introduction

Interpretation:

The free energy change for the given biological process is to be determined from the four given options.

Concept introduction:

For a general chemical reaction, $\text{aA + bB }\underset{}{\overset{}{\rightleftarrows }}\text{cC+dD}$, the reaction quotient will be represented as follows:

$Q=\frac{{\text{[C]}}^{\text{c}}{\text{[D]}}^{\text{d}}}{{\text{[A]}}^{\text{a}}{\text{[B]}}^{\text{b}}}$

The relation between free energy change and standard free energy change is as follows:

$\Delta G^{o\text{'}}\text{=}\Delta G^o+\text{R }T\ln Q$

Here, $\Delta G^{o\text{'}}$ is the Gibbs free energy change for a biological process, $\Delta G^o$ is the standard free energy change, $Q$ is the reaction quotient, $\text{R}$ is the gas constant, and $T$ is the temperature.