Question

If $\Delta H$ is the change in enthalpy and $\Delta E$ the change in internal energy accompanying a gaseous reaction

• A. $\Delta H$ is always greater than $\Delta E$
• B. $\Delta H<\Delta E$ only if the number of moles of the products is greater than the number of the reactants
• C. $\Delta H$ is always less than $\Delta E$
• D. $\Delta H<\Delta E$ only if the number of moles of the products is less than the number of moles of the reactants

Answer 1

The correct option is D $\Delta H<\Delta E$ only if the number of moles of the products is less than the number of moles of the reactants

$If\Delta n=-vethan\Delta H<\Delta E$