`DeltaH` for combustion of ethene and ethyne are -341.1 and -310.0 kcal, respectively. What will be the ratio of calorific values of ethane and ethyne, respectively?

Options

A. `1:0.95`
B. `0.65:2`
C. `0.95:1`
D. `0.002:1`

Answer

C

Explanation

Calorific value is heat produced by 1 g of fuel.
Calorific value of ethane`=(-341.1)/(30)=-11.37kcal//g`
calorific value of ethyne`=(-310.0)/(26)=-11.92kcal//g`
`therefore`Ratio of calorific values of ethane and ethyne ltbgt `=11.37:11.92=0.95:1`