Given the values of ΔH°rxn, ΔSrxn and T below, determine ΔSuniv and predict whether each
reaction is spontaneous or not.
a) ΔH°rxn = −95 kJ ΔSrxn = −157 J
K T = 298 K
b) ΔH°rxn = −95 kJ ΔSrxn = −157 J
K T = 855 K
c) ΔH°rxn = +95 kJ ΔSrxn = −157 J
K T = 298 K
d) ΔH°rxn = −95 kJ ΔSrxn = +157 J
K T = 398 K