Question

enthalpy of combustion of methane is -890kj. Calculate the enthalpy change for combustion of 4g of methane​

Answer 1

Answer:

Solution:- (B) 10Kcal

Mol. wt. of methane =16gm

Heat liberated during the combustion of 4gm methane =2.5kcal

Heat liberated during the combustion of 16gm methane = 42.5 ×16=10kcal

Hence the heat of combustion of methane is 10Kcal.