The enthalpy of neutralisation of \( \mathrm{NH}_{4} \mathrm{OH} \) with \( \mathrm{HCl} \) is \...

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The enthalpy of neutralisation of \( \mathrm{NH}_{4} \mathrm{OH} \) with \( \mathrm{HCl} \) is \( -51.46 \mathrm{~kJ} \mathrm{~mol}^{-1} \) and the enthalpy of neutralisation of \( \mathrm{NaOH} \) with \( \mathrm{HCl} \) is \( -55.90 \mathrm{~kJ} \mathrm{~mol}^{-1} \). The enthalpy of ionisation of \( \mathrm{NH}_{4} \mathrm{OH} \) is :-
(1) \( +107.36 \mathrm{~kJ} \mathrm{~mol}-1 \)
(2) \( -4.44 \mathrm{~kJ} \mathrm{~mol}^{-1} \)
(3) \( -107.36 \mathrm{~kJ} \mathrm{~mol}-1 \)
(4) \( +4.44 \mathrm{~kJ} \mathrm{~mol}-1 \)
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