For the gaseous reaction involving the complete combustion of iso-butane

Options

A. `Delta H = Delta E`
B. `Delta H gt Delta E`
C. `Delta H lt Delta E`
D. None of these

Answer

B

Explanation

`CH_(3)-overset(CH_3)overset(|)(CH)-CH_(3)(g) + 13/2 O_(2)(g) to 4CO_(2)(g) + 5H_(2)O(g)`
`Delta H = Delta E + Delta nRT`
`Delta n` = mole of (gaseous products–gaseous reactants) = +ve
Thus, `Delta H > Delta E`.