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The heats evolved in combustion of rhomb...

The heats evolved in combustion of rhombic and monoclinic sulphur are, respectively, `70960` and `71030cal mol^(-1)`. What will be the heat of conversion of rhomic sulphur to monoclinic?

A

`70960 cal`

B

`71030 cal`

C

`-70 cal`

D

`+70 cal`

Text Solution

Verified by Experts

`S_(R)+O_(2)rarrSO_(2),DeltaH^(Theta) = - 70960 kcal …(i)`
`S_(M)+O_(2)rarrSO_(2),DeltaH^(Theta) =- 71030 kcal …(ii)`
Substracting equation (ii) from equation (i), we get
`S_(R)rarrS_(M),DeltaH^(Theta) =+70cal`
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