Chemical Thermodynamics Question 118
The values of $ \Delta H $ for the combustion of ethene and ethyne are - 341.1 and - 310.0 kcal respectively. Which of the following is a better fuel [BHU 2001]
Options:
A) $ C_2H_2 $
B) $ C_2H_4 $
C) Both of these are correct.
D) None of these
Show Answer
Answer:
Correct Answer: A
Solution:
$ \Delta H $ for $ C_2H_6=-341.1,kcal $ its calorific value $ =\frac{-341.1}{30}=-11.37,kcal/g $ .
$ \Delta H $ for $ C_2H_2=-310.0,kcal $ its Calorific value $ =\frac{310.0,}{26}=11.92, $
hence $ C_2H_2 $ is a worse fuel.
BETA
