Consider the reaction 2A + B → C, where H° = -50 kJ/mol and S° = 100 J/(mol·K) at 298 K.

a) Is the reaction exothermic or endothermic? Explain your reasoning.
b) Calculate the standard Gibbs free energy change (G°) for the reaction at 298 K.
c) Predict whether the reaction is spontaneous at 298 K under standard conditions (G° < 0)

. Explain your reasoning.