1.

The H_(2)O(g) molecule dissociates as(i)H_(2)O(g)rarrH(g)+OH(g),DeltaH=490 kJ(ii)OH(g)rarrH(g)+O(g),DeltaH=424 kJ The average bond energy (in kJ) for water is

Answer»

490
424
914
`914//2`

Solution :EQ. (i) + eq. (II) find the REQUIRED result and divide by 2.


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