\(ii)\) \(S + O _2 \longrightarrow SO _2 \quad \Delta H _{ ii }= y\)
\(iii)\) \(CS _2+3 O _2 \longrightarrow CO _2+ SO _2 \quad \Delta H _{\text {iii }}= Z\)
\(iv)\) \(C +2 S \longrightarrow CS _2\)
\(iv)\) \(=(i)+2 (ii) - (iii)\)
\(\Delta H = (?)\)
\(\therefore \Delta H=x+2 y-z\)