Question

$C_{(dia)} + O_2 \longrightarrow CO_2$; $\Delta H$ = –395.4 kJ/mole
$C_{(gr)} + O_2 \longrightarrow CO_2$; $\Delta H$ = –393.5 kJ/mole
$C_{(gr)} \longrightarrow C_{(dia)}$; $\Delta H$ = ?
(a) –3.8
(b) –1.9
(c) +3.8
(d) +1.9

Answer 1

A must be the answer