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If the sea water is 3.5% (w/w) aqueous s...

If the sea water is 3.5% (w/w) aqueous solution of NaCI then its molality will be:-

A

0.65 N

B

0.68 N

C

0.66 N

D

0.61 N

Text Solution

Verified by Experts

The correct Answer is:
D
`N=(wxx1000)/(Mwxx(m)/(d))`
`N_(1)V_(1)=N_(2)V_(2)orN_(a)V_(a)=N_(b)V_(b)impliesN_(b)=(0.1xx10)/(15)`
`=0.066N`.
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