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When 7.1 gm Na(2)SO(4) ( molecular mass ...

When 7.1 gm `Na_(2)SO_(4)` ( molecular mass 142 ) dissolves in 100 ml `H_(2)O` ,the molarity of the solution is

A

2.0 M

B

1.0 M

C

0.5 M

D

0.05 M

Text Solution

Verified by Experts

The correct Answer is:
C
Molarity `=(w xx 1000)/(ml wt. xx "Volume ml.")=(7.1xx1000)/(142xx100)=0.5 M`.
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