Chemistry Gibbs Free Energy Solution: Calculate K for the reaction between glutamate and...

Solution: Calculate K for the reaction between glutamate and ammonia. (The standard free energy change for the reaction is +14.2 kJ/mol. Assume a temperature of 298 K.)

Problem

Calculate K for the reaction between glutamate and ammonia. (The standard free energy change for the reaction is +14.2 kJ/mol. Assume a temperature of 298 K.)

Solution

We’re being asked to determine the equilibrium constant (K) of a reaction between glutamate and ammonia


Recall that ΔG˚rxn and K are related to each other:


ΔG°rxn=-RTlnK


where: 

ΔG˚rxn is the standard free energy change

R is the universal gas constant

T is the temperature

K is the equilibrium constant


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