Question

During a chemical reaction, reactant A combines with reactant B to form product C and the beaker containing the reaction mixture becomes hot. Identify the correct observation for the energy content of the reaction

• A. The energy of reactant is more than that of product
• B. The energy of reactant is less than that of product
• C. The energy of reactant and product becomes equal after the reaction
• D. During this process, law of conservation of mass is not followed and hence energy is released

Answer 1

The correct option is A The energy of reactant is more than that of product

The reactions in which heat is evolved along with the formation of products are called exothermic reactions. The beaker containing the reaction mixture becomes hot, therefore, it is an exothermic reaction. This implies that the energy of products is less than that of reactants.

Hence, the correct answer is option (a).