1.

The \[{{H}_{2}}O(g)\] molecule dissociates as (i) \[{{H}_{2}}O(g)\to H(g)+OH(g);\,\Delta H=490\,kJ\] (ii) \[OH(g)\to H(g)+O(g);\,\Delta H=424\,kJ\] The average bond energy (in kJ) for water is

A. 490
B. 424
C. 914
D. 914/2
Answer» E.


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