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Ionic strength of 0.4 M CaCl(2) is...

Ionic strength of `0.4 M CaCl_(2)` is

A

`1.2`

B

`1.0`

C

`0.9`

D

`0.8`

Text Solution

Verified by Experts

The correct Answer is:
a
Ionic strength `=mu=(1)/(2)sumc_(i)Z_(i)^(2)`
`c_(i)=` concentration of ion, `Z_(i)=` valency of iond
`[Ca^(2+)]=0.4M,[Cl^(c-)]=0.8M`
`mu=(1)/(2)[0.4(2)^(2)+0.8(1)^(2)]=1.2`
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