Statement-I : The enthalpy of neutralization of the reaction between `HCl` and `NaOH` is `-13.7` kCal/mol. If the enthalpy of neutralization of oxalic acid `(H_(2)C_(2)O_(4))` by a strong base is `-25.4` kCal/mol, then the enthalpy change `(|Delta_(r)H|)` of the process `H_(2)C_(2)O_(4) rarr 2H^(+)+C_(2)O_(4)^(2-)` is `11.7` kCal/mol. Statement-II : `H_(2)C_(2)O_(4)` is a weak acid.A. If both Statement-I & Statement-II are True & the Statement-II is a correct explanation of the Statement-IB. If both Statement-I & Statement-II are True but Statement-II is not a correct explanation of the Statement-IC. If statement-I is True but the Statement-II is False.D. If Statement-I is False but the Satement-II is True

Statement-I : The enthalpy of neutralization of the reaction between `

1.	Statement-I : The enthalpy of neutralization of the reaction between `HCl` and `NaOH` is `-13.7` kCal/mol. If the enthalpy of neutralization of oxalic acid `(H_(2)C_(2)O_(4))` by a strong base is `-25.4` kCal/mol, then the enthalpy change `(\|Delta_(r)H\|)` of the process `H_(2)C_(2)O_(4) rarr 2H^(+)+C_(2)O_(4)^(2-)` is `11.7` kCal/mol. Statement-II : `H_(2)C_(2)O_(4)` is a weak acid.A. If both Statement-I & Statement-II are True & the Statement-II is a correct explanation of the Statement-IB. If both Statement-I & Statement-II are True but Statement-II is not a correct explanation of the Statement-IC. If statement-I is True but the Statement-II is False.D. If Statement-I is False but the Satement-II is True
Answer» Correct Answer - D `H^(+)+OH^(-) =13.7` `2H^(+)+2OH^(-) rarr H_(2)O=27.4` But energy released `=25.4` `:. H_(1)C_(2)O_(4) rarr 2H^(+) +C_(2)O_(4)^(-2)" "DeltaH=2" kCal/mol."`

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Calculate the mass of mercury which can be liberated from `HgO` at `25^(@)C` by the treatment of excess HgO with 41.84 kJ of heat at : (a) constant pressure (b) constant volume Given : `Delta H_(f)^(@)(HgO, s) = -90.8 kJ mol^(-1)` & `M(Hg) = 200.6 g mol^(-1)`.
The enthalpies of neutralization of a weak acid HA & a weak acid HB by `NaOH` are -6900 Cal/equivalent & -2900 Cal/equivalent repsectively. When one equivalent of NaOH is added to a solution containing one equivalent of HB, the enthalpy change was -3900 Calories. In what ratio is the base distribute between HA & HB ?
Statement-I : The enthalpy of neutralization of the reaction between `HCl` and `NaOH` is `-13.7` kCal/mol. If the enthalpy of neutralization of oxalic acid `(H_(2)C_(2)O_(4))` by a strong base is `-25.4` kCal/mol, then the enthalpy change `(|Delta_(r)H|)` of the process `H_(2)C_(2)O_(4) rarr 2H^(+)+C_(2)O_(4)^(2-)` is `11.7` kCal/mol. Statement-II : `H_(2)C_(2)O_(4)` is a weak acid.A. If both Statement-I & Statement-II are True & the Statement-II is a correct explanation of the Statement-IB. If both Statement-I & Statement-II are True but Statement-II is not a correct explanation of the Statement-IC. If statement-I is True but the Statement-II is False.D. If Statement-I is False but the Satement-II is True
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