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MCQMediumJEE Main 2025 · 24 January, Shift 2Hess's Law

Chemistry Question from JEE Main 2025 · 24 January, Shift 2

S(g)+32O2(g)→SO3(g)+2x kcalS(g) + \frac{3}{2} O_2(g) \rightarrow SO_3(g) + 2x \, \text{kcal} SO2(g)+12O2(g)→SO3(g)+y kcalSO_2(g) + \frac{1}{2} O_2(g) \rightarrow SO_3(g) + y \, \text{kcal}

The heat of formation of SO2(g)SO_2(g) is given by:

  • A

    2xy kcal\frac{2x}{y} \, \text{kcal}

  • B

    x+y kcalx + y \, \text{kcal}

  • C

    y−2x kcaly - 2x \, \text{kcal}

  • D

    2x+y kcal2x + y \, \text{kcal}

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