Question

For the chemical reaction C2H6 + 137 kJ → C2H4 + H2, the chemical energy of the__. A. reactant is greater than the chemical energy of the products.. . B. products is greater than the chemical energy of the reactant.. . C. reactant and the chemical energy of the products are equal.. . D. reaction is conserved.

Answer 1

For the chemical reaction C2H6 + 137 kJ → C2H4 + H2, the chemical energy of the reactant is greater than the chemical energy of the products. The correct option among all the options that are given in the question is the first option or option "A". I hope that this is the answer that has come to your help.

Answer 2

Answer : The correct option is, (B) products is greater than the chemical energy of the reactant.

Explanation :

Endothermic reaction : It is defined as the chemical reaction in which the energy is absorbed from the surrounding.

In the endothermic reaction, the energy of reactant are less than the energy of product.

During endothermic reaction, initially amount of heat is given to the system. That means, the chemical energy will be, positive.

Exothermic reaction : It is defined as the chemical reaction in which the energy is released into the surrounding.

In the exothermic reaction, the energy of reactant are more than the energy of product.

During exothermic reaction, initially there is no heat is given to the system, the heat is released after the chemical reaction. That means, the chemical energy will be, negative.

The given balanced chemical reaction is,

$C_2H_6+137KJ\rightarrow C_2H_4+H_2$

As per question, in this chemical reaction the chemical energy of the products is greater than the chemical energy of the reactant because in this reaction the value of energy is positive or we can say that the energy is given to the system.

Hence, the correct option is, (B) products is greater than the chemical energy of the reactant.