The enthalpy of neutralisation of NH₄OH with HCI is -51.46 kJ/mol⁻¹ and the enthalpy of neutralisation of NaOH with HCI is -55.90 kJ/mol⁻¹. The enthalpy of ionisation of NH4OH is.
1. -107.36 kJ/mol⁻¹
2. -4.44 kJ/mol⁻¹
3. +107.36 kJ/mol⁻¹
4. +4.44 kJ/mol⁻¹