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The Van't Hoff factor 0.1M la(NO(3))(3) ...

The Van't Hoff factor `0.1M la(NO_(3))_(3)` solution is found to be `2.74` the percentage dissociation of the salt is:

A

`85%`

B

`58%`

C

`65.8%`

D

`56.8%`

Text Solution

Verified by Experts

The correct Answer is:
B
`{:(La(NO_(3))_(3)rarr,La^(3+)+,3NO_(3)^(-)),(1,,),(1-alpha,alpha,3alpha):}`
`1 +3 alpha = 2.74`
`3 alpha = 1.74`
`alpha = 0.58 = 58%`
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