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Heat of formation of H(2)O((g))" at "25^...

Heat of formation of `H_(2)O_((g))" at "25^(@)C` is -243 kJ. `Delta U` for the reaction `H_(2(g))+(1)/(2) O_(2(g)) rarr H_(2)O_((g))" at "25^(@)C` is

A

246.8 kJ

B

-241.8 kJ

C

-243 kJ

D

243 kJ

Text Solution

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The correct Answer is:
B
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