Heats of combustion of CH4, C2H4, C2H6 are -890, -1411 and -1560 kJ/mole respectively. Which has the lowest fuel value in kJ/gm ?

1. CH4

2. C2H4

3. C2H6

4. All same

Concept Videos :-

#38 | Solved Problems on Thermochemistry: Set 1
#39 | Solved Problems on Thermochemistry: Set 2

Concept Questions :-

Thermochemistry

The heat of combustion of per gm of CH4

-89016=-55.625 kJ

The heat of combustion of per gm of C2H4

=141128=-50.393 kJ

The heat of combustion of per gm of C2H6

=-156030=-52 kJ

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