S(g) + 3 O2(g) SO3(g) + 2x kcal SO2(g) + 1 O2(g) SO3(g) + y kcal The heat of formation of SO2(g) is given by: (A) x + y kcal (B) 2x + y kcal (C) y x kcal (D) y – 2x kcal

Question

S(g) + 3 O2(g) SO3(g) + 2x kcal SO2(g) + 1 O2(g) SO3(g) + y kcal The heat of formation of SO2(g) is given by:

(A) x + y kcal
(B) 2x + y kcal
(C) y x kcal
(D) y – 2x kcal

Prashant Kotian · Accepted Answer

Correct answer: D. H1 = –2x H2 = –y x – H , SO O 3 S ) g ( ) g ( ) s (       y H , O 1 SO SO (g) ) g ( ) g (     _________________________ S(s) + O2(g)  SO2(g) Hr = H1 + H2 = – 2x + y = y – 2x kJ | JEE(Main) 2025 | DATE : 24-01-2025 (SHIFT-2) | PAPER-1 | CHEMISTRY PAGE # 3

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