\(\eqalign{ & \left( 1 \right)\,\,\,\mathop S\limits^0 + {H_2}\,\,\buildrel {{t^0}} \over \longrightarrow \,\,{H_2}\mathop S\limits^{ - 1} \cr & \left( 2 \right)\,\,2{H_2}\mathop S\limits^{ - 1} \, + {O_2}\,\,\buildrel {{t^0}} \over \longrightarrow 2\mathop S\limits^0 + 2{H_2}O \cr & \left( 3 \right)\,\,\mathop S\limits^0 + {O_2}\,\,\buildrel {{t^0}} \over \longrightarrow \,\,\mathop S\limits^{ + 4} {O_2} \cr & \left( 4 \right)\,\,\mathop S\limits^{ + 4} {O_2} + B{r_2} + 2{H_2}O\,\, \to \,\,2HBr + {H_2}\mathop S\limits^{ + 6} {O_4} \cr} \)
