InterviewSolution
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InterviewSolution
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From the following data at `25^(@)C` `{:("Reaction",Delta_(r)H^(@)" kJ/mol"),(1/2 H_(2)(g)+1/2 O_(2)(g) rarr OH(g),42),(H_(2)(g)+1/2 O_(2)(g) rarr H_(2)O(g),-242),(H_(2)(g) rarr 2H(g),436),(O_(2)(g) rarr 2O(g),495):}` Which of the following statement (s) is/are correct:A. `Delta_(r)H^(@)` for the reaction `H_(2)O(g) rarr 2H(g)+O(g)` is 925.5 kJ/molB. `Delta_(r)H^(@)` for the reaction `OH(g) rarr H(g)+O(g)` is 502 kJ/molC. Enthalpy of formation of `H(g)` is `-218` kJ/molD. Enthalpy of formation of `OH(g)` is `42` kJ/mol |
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Answer» Correct Answer - A::D (A) `H_(2)O rarr 2H+O` `DeltaH=925.5` `B rarr 507.5` `C rarr 432/2 =218` `D rarr 42` |
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