`Xg` of ethanal was subjected to combustion in a bomb calorimeter and the heat produced is `Y J`. Then

Options

A. `DeltaE_(combustion)=-X J`
B. `DeltaE_(combustion)= -Y J`
C. `DeltaE_(combustion)= (-44Y)/(X) J mol^(-1)`
D. `DeltaH_(combustion)= (-44Y)/(X) J mol^(-1)`

Answer

C

Explanation

`CH_(3)CHO+(5)/(2)O_(2)to2CO_(2)+2H_(2)O`
Heat of combustion when one burns to give desriable produces is
`X g` ethanal give beat `=Y "joules"`
`:. 44g` ethanal give heat `=(44Y)/(X) "joule" mol^(-1)`
As reaction is exothermic
`:. (DeltaE)=(-44Y)/(X) J mol^(-1)`