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Q.

If enthalpy of combustion of methane is –x kJ mol–1 then heat evolved by the combustion of 8 g CH4 is

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a

x kJ

b

 8x kJ 

c

16x kJ 

d

x2kJ

answer is A.

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Detailed Solution

1 mol CH4 gives x kJ heat 16 g CH4 gives x kJ heat
8 g CH4 gives x2kJ heat

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