1.

On the basis of the following thermochemical data (Delta H_(f)^(@))_(H^(+)) = 0 H_(2)O (l) to H^(+) (aq) + OH^(-) (aq) , Delta H = 57.32 kJ H_(2) (g) + (1)/(2) O_(2) (g) to H_(2) O (l) , Delta H= -286.20 kJ The value of enthalpy of formation of OH^(-)ion at 25^(@) C is -

Answer»

`-228.88 KJ `
`+228.88` kJ
`-343 . 52` kJ
`-22.88` kJ

ANSWER :A


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