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Consider the reaction : SO(2)(g)+(1)/...

Consider the reaction `:`
`SO_(2)(g)+(1)/(2)O_(2)(g) rarr SO_(3)(g),DeltaH=-98.3kJ`
If the enthalpy of formationof `SO_(3)(g)` is `-395.4kJ` , then the enthalpy of formation of `SO_92)(g)` is

A

`297.1kJ`

B

`493.7kJ`

C

`-493.7kJ`

D

`-297.1kJ`

Text Solution

Verified by Experts

The correct Answer is:
D
For formation of `SO_(3)(g)`.
`S+3//2O_(2) rarr SO_(3), Delta H =395.4 kJ`
Subtract the given equation from the above and hence `Delta H =395.4+98.3= - 297.1 kJ`
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DINESH PUBLICATION-IONIC EQUILIBRIUM -BRAIN TEASERS -3
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