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The van't hoff factor (i) for a dilute a...

The van't hoff factor (i) for a dilute aqueous solution of the strong electrolyte barium hydroxide is

A

3

B

0

C

1

D

2

Text Solution

Verified by Experts

The correct Answer is:
a
`Ba(OH)_(2)overset((aq))toBa^(2+)(aq)+2OH^(-)(aq)`
Since `Ba(OH)_(2)` is a strong electrolyte, degree of dissociation `(alpha)=1`
`"For dissociation",alpha=(i-1)/(n-1)`
or i=(i-1)/(3-1)(i-1)/2`
`therefor i=2+1=3`
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