Sulphates salt gives metal oxide and SO3 or SO2 - 1-2O2 on heating -

The correct options are B CaSO_4 D MgSO_4 Alkaline earth metal sulphate gives #160;metal oxide and SO_3 on heating.Reaction is: #160; M ...

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Preparations and Reactions of Sodium Oxide

Sulphates sal...

Question

Sulphates salt gives metal oxide and $S O_{3}$ (or $S O_{2} + \frac{1}{2} O_{2}$ ) on heating :

K_{2} S O_{4}

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C a S O_{4}

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M g S O_{4}

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(N H_{4})_{2} S O_{4}

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Solution

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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} ⟶ 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}

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 O}_{3} ({S O}_{2} + \frac{1}{2} 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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