In the reaction : S + (3)/(2)O_(2)rarr SO_(3)+ 2 x kJand SO_(2)+(1)/(2)O_(2) rarr SO_(3)+y kJheat of formation of SO_(2) is

In the reaction : S + (3)/(2)O_(2)rarr SO_(3)+ 2 x kJand SO_(2)+(1)/(2

1.	In the reaction : S + (3)/(2)O_(2)rarr SO_(3)+ 2 x kJand SO_(2)+(1)/(2)O_(2) rarr SO_(3)+y kJheat of formation of SO_(2) is
Answer» `x-y` `2x+y` `x+y` `y-2x` Solution :Given `: S+(3)/(2) O_(2)rarr SO_(3), DELTAH = -2 x KJ `...(i) `SO_(2)+(1)/(2) O_(2) rarr SO_(3) , DeltaH = - y kJ `.....(ii) Aim `: S + O_(2) rarr SO_(2), DeltaH =?` EQN. (i) - Eqn. (ii) gives `S+ O_(2) -SO_(2) rarr 0,DeltaH = - 2 x - ( - y) = y - 2x`