In the reaction: S + 3/2 O2 longrightarrow SO3 + 2x kcal and SO2 + 1/2 O2 longrightarrow SO3 + y kcal, heat of formation of SO2 is

Question

In the reaction: S + 3/2 O2 longrightarrow SO3 + 2x kcal and SO2 + 1/2 O2 longrightarrow SO3 + y kcal, heat of formation of SO2 is (A) (x + y) (B) (x - y) (C) (2x + y) (D) (2x - y)

Tardigrade Admin · Accepted Answer

S +3 / 2 O 2 ⋅s SO 3+2 x kcal SO 3 longrightarrow SO 2+1 / 2 O 2 longrightarrow SO 3+y k cal ∴ Heat of formation of SO 2 in equal to 2 x-y k cal

Q. In the reaction : $S + 3/2 O_{2} ⟶ S O_{3} + 2 x$ kcal and $S O_{2} + 1/2 O_{2} ⟶ S O_{3} + y$ kcal, heat of formation of $S O_{2}$ is

$(x + y)$

$(x - y)$

$(2 x + y)$

$(2 x - y)$

$S + 3/2 O_{2} \dots S O_{3} + 2 x k c a l$
$S O_{3} ⟶ S O_{2} + 1/2 O_{2} ⟶ S O_{3} + y k c a l$
$∴$ Heat of formation of $S O_{2}$ in equal to $2 x - y k c a l$

Q. In the reaction : S+3/2O2​⟶SO3​+2x kcal and SO2​+1/2O2​⟶SO3​+y kcal, heat of formation of SO2​ is

(x+y)

(x−y)

(2x+y)

(2x−y)