Chemical Thermodynamics Question 242
Question: $ 2.2016,gm $ of acetaldehyde produced $ 13.95,kcal $ of heat on combustion in $ O_2 $ . Calculate the heat of combustion of $ CH_3CHO $ [Bihar CEE 1995]
Options:
A) 279 kcal
B) 972 kcal
C) 27.9 kcal
D) 2.79 kcal
Show Answer
Answer:
Correct Answer: A
Solution:
$ \Delta H=\frac{13.95\times 44}{2.2016}=278.7kcal $ .
