Hess’s Cycle Question 1

$S_{(rhombic)}+O_2\rightarrow SO_2\: \: \: \: \: \: \Delta H: -297 kJ\: mol^-^1$

$S_{(monoclinic)}+O_2\rightarrow SO_2\: \: \: \: \: \: \Delta H: -293.3 kJ\: mol^-^1$

Find the enthalpy change for the allotropic change of sulfur, as express in the following reaction.

$S_{(rhombic)}\rightarrow S_{(monoclinic)}\: \: \: \: \: \: \Delta H: ?\: mol^-^1$

$clockwise = anticlockwise$

$x-{\color{Magenta} 293.3} = {\color{Blue} -297}$

$x=-3.7kJ$