# At 25°C molar conductance of 0.1 molar aqueous solution of ammonium hydroxide is 9.54 ohm-1 cm2 mol-1 and at infinite dilution its molar conductance is 238 ohm -1 cm2 mol-1. The degree of ionisation of ammonium hydroxide at the same concentration and temperature is: Option 1) 40.800% Option 2) 2.080% Option 3) 20.800% Option 4) 4.008%

Degree of $(\alpha )=\frac{molar \: conductivity\: at \: conc.c(\wedge ^{c}_{m})}{molar \: conductivity \:at \:infinite\: dilution(\wedge ^{\infty }_{m}) }$

$(\alpha )=\frac{9.54\Omega ^{-1}cm^{2}mol^{-1}}{238\Omega ^{-1}cm^{2}mol^{-1}}$

$=0.04008$

$=4.008%$

Option 1)

40.800%

Option is incorrect

Option 2)

2.080%

Option is incorrect

Option 3)

20.800%

Option is incorrect

Option 4)

4.008%

Option is correct

### Preparation Products

##### JEE Main Rank Booster 2021

This course will help student to be better prepared and study in the right direction for JEE Main..

₹ 13999/- ₹ 9999/-
##### Knockout JEE Main April 2021 (Subscription)

An exhaustive E-learning program for the complete preparation of JEE Main..

₹ 4999/-
##### Knockout JEE Main April 2021

An exhaustive E-learning program for the complete preparation of JEE Main..

₹ 22999/- ₹ 14999/-
##### Knockout JEE Main April 2022

An exhaustive E-learning program for the complete preparation of JEE Main..

₹ 34999/- ₹ 24999/-