Question

The equation below shows a chemical reaction. A + B —> C + D + heat According to the law of conservation of energy, why is heat released in this reaction? A. because heat is a byproduct of all chemical reactions B. because heat helps offset the cooler temperature of the products C. because the reactants absorb heat from their surroundings in order to form the products D. because there is a surplus of energy left over from the reactants after the products are formed

Answer 1

D

Step-by-step explanation:

Heat energy is given off in this chemical reaction as a result of the fact of energy surplus.

In this particular case of question, it is known that for heat to be given off, the reactants are at a higher level compared to the product. This is the principal reason why the extra heat is given off.

This is a very good example of what happens in an exothermic reaction. In fact, this particular reaction is an exothermic reaction as heat is released alongside the formation of products.