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Molar conductance of 0. 1 molar aqueous ...

Molar conductance of 0. 1 molar aqueous solution of ammonium hydroxide is
`9.54 ohm ^(-1) cm ^(2) mol ^(-1).` Molar conductance at infinite dilution of ammonium hydroxide is
`238 ohm ^(-1) cm ^(2) mol ^(-1) .` The degree of ionisation of ammonium hydroxide at 0.1 M concentration is:

A

`40. 800%`

B

`2. 080%`

C

`20. 800% `

D

`4. 008% `

Text Solution

Verified by Experts

The correct Answer is:
D
`% alpha = ( lamda ^(c))/( lamda ^(oo)) xx 100 = ( 9. 54 )/(238) xx 100 = 4 .088%`
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