The reaction below proceeds spontaneously at 298 K. NH3(g) +Cl2(g)NH4Cl(s) What is the sign of the entropy change (triangle) S S is negative because the product is less random than the reactants.S is negative because the reactants are less random than the product.S is positive because the product is less random than the reactants.S is positive because the reactants are less random than the product.
In the reaction NH3(g) +Cl2(g) --> NH4Cl(s) which occurs at 298 K, the delta S is negative because the reaction occurred spontaneously and the product is less random than the reactants. Since the product is solid and the reactants are gases.
