For a reaction, ΔH = -286 kJ. When is the reaction spontaneous? A. When TΔS = -286 kJ
B. When TΔS > 0
C. When TΔS < -286 kJ
D. When TΔS = 2(-286 kJ)

answer: enthalpy

explanation:

for a exothermic reaction, the energy is released i.e. the energy of the products is lower than the energy of the reactants.

= enthaply

= energy of products

= energy of reactants

as , thus comes out to be negative. negative value of enthalpy shows that the reaction is exothermic.