Question

The formation of water from $H_2$(g) and $O_2$(g) is an exothermic reaction because

• A. the chemical energy of H2(g) and O2(g) is more than that of water
• B. the chemical energy of H2(g) and O2(g) is less than that of water
• C. Not dependent on energy
• D. the temperature of H2(g) and O2(g) is more than that of water

Answer 1

The correct option is A the chemical energy of H2(g) and O2(g) is more than that of water

Exothermic reaction is a reaction in which net energy is released in a reaction Hence, chemical rnergy of reactants (H 2 ​ (g) and O 2 ​ (g)) is more than that of the product (H 2O) Hence A is correct answer