1.

Heat of formation of H_2O(g) at 1 atm and 25^@C is -243 kJ. triangleE for the reaction, H_2(g)+1/2O(g)rarrH_2O(g) at 25^@C is

Answer»

241.8 KJ
`-241.8 kJ`
`-243 kJ`
243 kJ

Answer :B


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