The heat of neutralisation of oxalic acid is `-25.4 kcal mol^(-1)` using strong base, `NaOH`. Hence, the enthaly change of the process is `H_(2)C_(2)O_(4) hArr 2H^(o+) +C_(2)O_(4)^(2-)` isA. `2.0 kcal`B. `-11.8 kcal`C. `1.0 kcal`D. `-1.0 kcal`

The heat of neutralisation of oxalic acid is `-25.4 kcal mol^(-1)` usi

1.	The heat of neutralisation of oxalic acid is `-25.4 kcal mol^(-1)` using strong base, `NaOH`. Hence, the enthaly change of the process is `H_(2)C_(2)O_(4) hArr 2H^(o+) +C_(2)O_(4)^(2-)` isA. `2.0 kcal`B. `-11.8 kcal`C. `1.0 kcal`D. `-1.0 kcal`
Answer» Oxalic acid has two ionisable `H^(o+)`. Hence, expected heat of neutralisation, if it behaves as a strong acid would have been `=- 13.7 xx2=- 27.4 kcal mol^(-1)` But experimetal value `=- 25.4 kcal mol^(-1)` `:.` Heat of ionisation `= 2.0 kcal mol^(-1)`

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The heat of neutralisation of oxalic acid is `-25.4 kcal mol^(-1)` using strong base, `NaOH`. Hence, the enthaly change of the process is `H_(2)C_(2)O_(4) hArr 2H^(o+) +C_(2)O_(4)^(2-)` isA. `2.0 kcal`B. `-11.8 kcal`C. `1.0 kcal`D. `-1.0 kcal`

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