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The heat of combustion of CH(4(g)), C((g...

The heat of combustion of `CH_(4(g)), C_((g))` and `H_(2(g))` at `25^(@)C` are `-212.4` K cal, -94.0 K cal and -68.4 K cal respectively, the heat of formation of `CH_(4)` will be -

A

`+54.4kcal`

B

`-18.4 kcal`

C

`-375.2 kcal`

D

`+212.8 kcal`

Text Solution

Verified by Experts

The correct Answer is:
B
`DeltaH_(f)(CH_(4))=(DeltaH_(comb)"of"C+2xxDeltaH_(comb)"of"H_(2)-DeltaH_(comb)"of"CH_(4))`
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DINESH PUBLICATION-CHEMICAL THERMODYNAMICS AND CHEMICAL ENERGETICS -Exercise
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