Question

How does ΔG° change for every increase in Keq by an order of magnitude?

ΔG° increases by ~1.4 kcal/mol for each order of magnitude increase in Keq.

None of the other statements is a reasonable description of the relationship between ΔG° and Keq.

ΔG° increases by ~5.5 kcal/mol for each order of magnitude increase in Keq.

ΔG° decreases but not in a predictable way.

ΔG° decreases by ~1.4 kcal/mol for each order of magnitude increase in Keq.

ΔG° decreases by ~5.5 kcal/mol for each order of magnitude increase in Keq.

ΔG° increases but not in a predictable way.

Answer 1

This means, of course, that if the total Gibbs free energy GG of a mixture of reactants and products goes through a minimum value as the composition changes, then all net change will cease— the reaction system will be in a state of chemical equilibrium. You will recall that the relative concentrations of reactants and products in the equilibrium state is expressed by the equilibrium constant. In this lesson we will examine the relation between the Gibbs free energy change for a reaction and the equilibrium constant.

given the formula

1. 1.4 kcal/mol does not increase the magnitude order

2. 5.5kcal/mol does decrease the magnitude order by 10^-3