When 1 mole of oxalic acid is treated with excess of NaOH in dilute aqueous silution, 108 kJ of heat is liberated, then the enthalpy of ionisation of the oxalic acid is (Given, H+(aq)+ OH−(aq) →H2O(I); △_neut H = -57.3 kJ)
A
4.6 kJ mol−1
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B
-4.6 kJ mol−1
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C
-6.6 kJ mol−1
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D
6.6 kJ mol−1
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