The heats evolved in combustion of rhombic and monoclinic sulphur are, respectively, `70960` and `71030cal mol^(-1)`. What will be the heat of conversion of rhomic sulphur to monoclinic?

Options

A. 70960 calories
B. 71030 calories
C. `-70` calories
D. +70 calories

Answer

D

Explanation

`{:(S_("Rhombic")+O_(2(g))rarrSO_(2(g)), DeltaH=-70960 cal),(S_(O2(g))rarrO_(2(g))+S_("Monoclinic "), Delta H=-71030 cal):}/(S_("Rhombic")rarrS_("Monoclinic",)Delta H=70 cal)`