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Calculate the heat of combustion (in KJ)...

Calculate the heat of combustion (in KJ) of methane from the following data
(i) `C ("graphite")+2H_(2)(g) rarr CH_(4) (g), DeltaH=-74.8 kJ`
(ii) `C ("graphite")+O_(2) (g) rarr CO_(2) (g), DeltaH=-393.5 kJ`
(iii) `H_(2(g))+1//2O_(2(g)) rarr H_(2)O_((l)), DeltaH=-286.2 kJ`.

A

`-891.1`

B

`-816.3`

C

`-965.9`

D

`-1040.7`

Text Solution

Verified by Experts

The correct Answer is:
A
`CH_(4)+2O_(2)rarrCO_(2)+2H_(2)O,DeltaH=H_(P)-H_(R)`
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