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The heats of combustion for C, H(2) and ...

The heats of combustion for `C, H_(2)` and `CH_(4)` are `-349, -241.8` and `-906.7 kJ` respectively. The heat of formation of `CH_(4)` is

A

174.1 kJ

B

274 kJ

C

374.1 kJ

D

74.1 kJ

Text Solution

Verified by Experts

The correct Answer is:
D
By `[(i)+2 xx (ii)]-(ii) `
`C+2H_2 rarr CH_4, Delta H = 74.1 kJ `
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NIKITA PUBLICATION-Chemical Thermodynamics & Energetics-QUESTION FROM COMPETITIVE EXAM
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