In this reaction _____. A scheme of a chemical reaction. The reactants are two molecules, one of which consists of A and B, and the other consists of C and D. The products are two molecules, one of which consists of A and C, and the other consists of B and D. The energy of molecules AB and CD is higher than the energy of molecules AC and BD.
(a)- the products have been rearranged to form reactants
(b)-the products have less potential energy than the reactants
(c)-CD is a product
(d)-AC is a reactant
(e)-entropy has decreased

(a)- the products have been rearranged to form reactants This option is correcrt because it is a double substitution reaction, and the reactants interchange cations and anions to form new compounds.

(b)-the products have less potential energy than the reactants I think this option is wrong because products have less activation energy than the reactants not potential energy.

(c)-CD is a product This option is wrong, CD is a reactant

(d)-AC is a reactant This option is wrong, AC is a product

(e)-entropy has decreased , to know this we the data, and the question do not give enough information about this.