Question

For a certain reaction ∆H⁰ =219 kJ and ∆S⁰ = -21 J/K. Determine whether the reaction is spontaneous or nonspontaneous.

Answer 1

Given : ∆H⁰ = 219 kJ; ∆S⁰ = -21 J/K, ∆G⁰ = ?

For standard state, T = 298 K

Since ∆S < 0 and ∆G⁰ > 0, the reaction is nonspontaneous.