Question

For the chemical reaction C2H6 --> C2H4 + H2 + 137kJ, the chemical energy of the A. reactant and the chemical energy of the products are equal. B. reaction cannot be calculated. C. reactant is greater than the chemical energy of the products. D. products is greater than the chemical energy of the reactant.

Answer 1

The chemical energy of the C. Reactant is greater than the chemical energy of the products. As this is an energy releasing reaction.

Answer 2

Answer: The chemical energy of reactants is greater than the chemical energy of products.

Explanation: In the given reaction

$C_2H_6\rightarrow C_2H_4 + H_2 +137 kJ$

It can be seen that the energy has been released. Thus we can say that reactants have converted to products by release of energy. Thus energy of products is less as compared to energy of reactants as some of the energy has been released.