Thermodynamics Question 100
Question: The $ H _{2}O(g) $ molecule dissociates as (i) $ H _{2}O(g)\to H(g)+OH(g);\Delta H=490kJ $ (ii) $ OH(g)\to H(g)+O(g);\Delta H=424kJ $ The average bond energy (in kJ) for water is
Options:
A) 490
B) 424
C) 914
D) 914/2
Show Answer
Answer:
Correct Answer: D
Solution:
eq. (i) + eq. (ii) find the required result and divide by 2.
