Question
Zinc granules react with dilute HCl to give H2 at 17oC. The enthalpy change for the reaction is −12.55 kJmol−1 and the entropy change equals to 5.0 JK−1mol−1. The Gibbs free energy change (in kJmol−1 ) of the reaction is x , then magnitude of x i.e., |x| is: