1.

5.3 g of Na_(2)CO_(3) taken in a 250 ml flask and water added upto the mark. 10ml of that solution was taken in a 50 ml flask water added upto the mark. Find molarity of that dilute solution.

Answer»

0.1 M
0.02 M
0.04 M
none

SOLUTION :`M_(1)=(5.3)/(106xx0.25)=0.2M,M_(1)V_(1)=M_(2)V_(2)`
`0.2xx10=M_(2)xx50impliesM_(2)=0.04M`


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