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The molecular formula of a commercial re...

The molecular formula of a commercial resin used for exchanging ions in water softening is `C_(8)H_(7)SO_(3)Na(mol. Wt. 206)` . What would be the maximum uptake of `Ca^(2+)` ions by the resin when expressed in mole per gram resin?

A

`1/103`

B

`1/206`

C

`2/309`

D

`1/412`

Text Solution

Verified by Experts

The correct Answer is:
D
1g of `C_(8)H_(7) SO_(3) Na =1/206 ` mole
`2C_(8) H_(7)SO_(3)Na + Ca^(2+) to (C_(8)H_(7) SO_(3))_(2) Ca+ 2Na^(+)`
`1/206 ` mole =`1/412` mole
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