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The ionic mobility for some ions in wate...

The ionic mobility for some ions in water at 298 K is given as following
`{:("ions" , "ionic mobility"),(K^(+) , 7.616x10^(-4)),(Ca^(+2), 12.33xx10x^(-4)),(Br^(-) , 8.09xx10^(-4)),(SO_(45)^(-2), 16.58xx10^(-4)):}`
If degree of dissociation is 10% then equivalent conductcne of `CaSO_(4)` is

A

27.9

B

`2.581xx10^(-4)`

C

`3.182xx10^(-4)`

D

30.6

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