Chemical Thermodynamics Question 127
Question: For the reaction $ PCl_5(g)\to PCl_3(g)+Cl_2(g) $ [MH CET 2004]
Options:
A) $ \Delta H=\Delta E $
B) $ \Delta H>\Delta E $
C) $ \Delta H<\Delta E $
D) None of these
Show Answer
Answer:
Correct Answer: B
Solution:
$ PCl_5(g)\to PCl_3(g)+Cl_2(g) $ For this reaction $ \Delta ng=2-1=1 $
$ \Delta ng $ is positive, i.e., there is an increase in the number of gaseous moles then $ \Delta H>\Delta E $
