Heat of combustion of CH4,C2H6,C2H4 and C2H2 gases are -212.8,-373.0,-337.0 and -310.5Kcalmol- 1 respectively at the same temperature. The worst fuel among these gases is :-

Question

Heat of combustion of CH4,C2H6,C2H4 and C2H2 gases are -212.8,-373.0,-337.0 and -310.5Kcalmol- 1 respectively at the same temperature. The worst fuel among these gases is :- (A) CH4 (B) C2H6 (C) C2H4 (D) C2H2

Tardigrade Admin · Accepted Answer

Calorific value of CH4=(+ 212 . 8/16)=13.3cal Calorific value of C2H6=(373/30)=12.43cal Calorific value of C2H4=(337/28)=12.03cal Calorific value of C2H2=(310 . 5/26)=11.94cal C2H2 has least calorific value hence worst fuel

Q. Heat of combustion of $C H_{4}, C_{2} H_{6}, C_{2} H_{4}$ and $C_{2} H_{2}$ gases are $- 212.8, - 373.0, - 337.0$ and $- 310.5 Kc a l m o l^{- 1}$ respectively at the same temperature. The worst fuel among these gases is :-

$C H_{4}$

$C_{2} H_{6}$

$C_{2} H_{4}$

$C_{2} H_{2}$

Q. Heat of combustion of CH4​,C2​H6​,C2​H4​ and C2​H2​ gases are −212.8,−373.0,−337.0 and −310.5Kcalmol−1 respectively at the same temperature. The worst fuel among these gases is :-

CH4​

C2​H6​

C2​H4​

C2​H2​

Calorific value of CH4​=16+212.8​=13.3cal Calorific value of C2​H6​=30373​=12.43cal Calorific value of C2​H4​=28337​=12.03cal Calorific value of C2​H2​=26310.5​=11.94cal C2​H2​ has least calorific value hence worst fuel

Q. Heat of combustion of $C H_{4}, C_{2} H_{6}, C_{2} H_{4}$ and $C_{2} H_{2}$ gases are $- 212.8, - 373.0, - 337.0$ and $- 310.5 Kc a l m o l^{- 1}$ respectively at the same temperature. The worst fuel among these gases is :-

$C H_{4}$

$C_{2} H_{6}$

$C_{2} H_{4}$

$C_{2} H_{2}$