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Q. For the reaction,
2H2(g)+O2(g)2H2O(g) , ΔH=573.2kJ
The heat of decomposition of water per mole is

MHT CETMHT CET 2007

Solution:

Heat of decomposition of water is

H2O(g)H2(g)+12O2(g)

ΔH=+573.22

=286.6kJ/mol