The value of heat of formation of $S O_{2}$ and $S O_{3}$ are $- 398.2 k J$ and $- 198.2 k J$ . The heat of formation of this reaction will be $S O_{2} + \frac{1}{2} O_{2} \to S O_{3}$

- 200 k J

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- 356.2 k J

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+ 200 k J

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- 396.2 k J

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Solution

The correct option is A $- 200 k J$
Hence A is correct

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Similar questions

The heat of formation of $S O_{2}$ is:

$S + \frac{3}{2} O_{2} \to S O_{3} + 2 x k J$
$S O_{2} + \frac{1}{2} O_{2} \to S O_{3} + y k J$

S + \frac{3}{2} O_{2} \to S O_{3} + 2 x k c a l

S O_{2} + \frac{1}{2} O_{2} \to S O_{3} + y k c a l

S O_{2}

S + \frac{3}{2} O_{2} ⟶ S O_{3} + 2 x k c a l

S O_{2} + \frac{1}{2} O_{2} ⟶ S O_{3} + y k c a l

S O_{2}

O_{2} \to S O_{3}

S O_{2} + 1 / 2 O_{2} \to S O_{3}

S O_{2}

In the reaction

$S + \frac{3}{2} O_{2} \to S O_{3} + 2 x k J$ and $S O_{2} + \frac{1}{2} O_{2} \to S O_{3} + y k J$

Heat of formation of $S O_{2}$ is

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