Which of the following conditions will result in a reaction that is spontaneous at all temperatures?
a. positive enthalpy change and positive entropy change
b. negative enthalpy change and positive entropy change
c. positive enthalpy change and negative entropy change
d. negative enthalpy change and negative entropy change
d. liquid water is less dense than solid water

answer:

the reaction is type of combination reaction.

explanation:

on the product side, there are 2 molecules of bonded to fe   which means one atom of fe are combined two molecules of . so, balanced chemical equation becomes :

this reaction follows the reaction type of combination reaction. a combination reaction is defined as chemical reaction in which reactants combines together to form a single product.

the answer is barium and copper bromide