K(2)HgI(4) is 40% ionised in aqueous so...

`K_(2)HgI_(4)` is 40% ionised in aqueous solution. The value of its van't Hoff factor (i) is :

A

`1.8`

B

`1.6`

C

`2.0`

D

`2.2`

Verified by Experts

The correct Answer is:

A

`K_2[HgI_4] rarr2K^(+) + [HgI_4]^(-2) ,n=3`
`i=1+(3-1)xx0.4`
`= 1+ 2xx0.4 = 1.8`.

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