ChemistryFor gaseous reaction, if ∆H is the change in enthalpy and ∆U that in internal energy then

For gaseous reaction, if $∆$ H is the change in enthalpy and $∆$ U that in internal energy then

A
$∆$ H is always greater than $∆$ U
B
$∆$ H is always less than $∆$ U
C
$∆$ H < $∆$ U only if the number of moles of the products is less than that of the reactants
D
$∆$ U < $∆$ H only if the number of moles of the reactants is less than that of the products