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_(
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/mol
B. `Delta_(r)H^(@)` for the reaction `OH(g) rarr H(g)+O(g)` is 502 kJ/mol
C. Enthalpy of formation of `H(g)` is `-218` kJ/mol
D. Enthalpy of formation of `OH(g)` is `42` kJ/mol
8 views
1 Answers
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`
8 views
Answered