Chemical Thermodynamics Question 83
Question: Energy required to dissociate 4 gm of gaseous hydrogen into free gaseous atoms is 208 kcal at $ 25^{o}C $ . The bond energy of $ H-H $ bond will be [CPMT 1989; MP PET 2000; J & K 2005]
Options:
A) 104 kcal
B) 10.4 kcal
C) 1040 kcal
D) 104 cal
Show Answer
Answer:
Correct Answer: A
Solution:
$ 4g,H_2=2 $ moles. Bond energy for 1 mole of $ H_2=208/2=104kcal. $
