At 26^(@)C, Lambda(m)^(@)(NH(4)Cl)="129....

At `26^(@)C, Lambda_(m)^(@)(NH_(4)Cl)="129.8 ohm"^(-1)."cm"^(2)."mol"^(-1)` and `Lambda_(m)^(@)(NaCl)="126.5 ohm"^(-1)."cm"^(2)."mol"^(-1)`. Apart from the values of `Lambda_(m)^(@)(NH_(4)Cl) and Lambda_(m)^(@)(NaCl)`, which of the following quantities should be known, to determine the value of `Lambda_(m)^(@)(NH_(4)OH)-`

molar ionic conductance of `OH^(-)(aq)` at infinite dilution

`Lambda_(m)^(@)` value of NaOH solution

extent of ionisation of `NH_(4)OH`

`Lambda_(m)^(@)` value of HCl solution

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