Question

At `25^(@)C` molar conductance of `0.1` molar aqueous solution of ammonium hydroxide is `9.54 ohm^(-1) cm^(2) mol^(-1)` and at infinte dilution its molar conductance is `238 ohm^(-1) cm^(2) mol^(-1)` The degree of ionisation of ammonium hydroxide at the same concentration and termperature is
A. `40.800%`
B. `2.08o%`
C. `20.800%`
D. `4.008%`

Answer 1

Correct Answer - D
`%alpha=(lamda^(c))/(lamda^(oo))xx100=(9.54)/(238)xx100=4.008%`