Chapter 6.3, Problem 2CC

Summary Introduction

To determine:

Whether “glutamic acid + ammonia + ATP” or “glutamine + ATP +P_i” has more free energy.

Concept introduction:

Gibbs free energy is the energy present in the system that can perform work under the condition of uniform temperature and pressure. It is denoted by G.

In a chemical reaction, change in free energy of initial and final state is represented by $\text{ΔG}$. If $\text{ΔG}$ is negative then the reaction will proceed spontaneously and if it is positive the reaction will require input of energy from outside to proceed.