Thermodynamics Question 81
Question: For which one of the following reactions, $ \Delta H $ is not equal to $ \Delta E $
[IIT JEE 1995]
Options:
A) $ {H _{2(g)}}+{I _{2(g)}} $ ⇌ $ 2H{I _{(g)}} $
B) $ {C _{(s)}}+{O _{2(g)}} $ ⇌$ C{O _{2(g)}} $
C) $ {N _{2(g)}}+3{H _{2(g)}} $ ⇌$ 2N{H _{3(g)}} $
D) $ HC{l _{(aq)}}+NaO{H _{(aq)}} $ ⇌$ NaC{l _{(aq)}}+H _{2}O $
Show Answer
Answer:
Correct Answer: C
Solution:
In this reaction $ \Delta n=2-4=-2 $ so $ \Delta H\ne \Delta E $ .
