1.

200g. Of 5% solution (by mass) of the solute A is mixed with 300 g. of a 10% solution (by mass) of solute B. The mass percent of A and B in the mixtures are respectively

Answer»

3 and 5
5 and 10
2 and 6
6 and 12

Solution :200 g of 5% solution of A CONTAINS 10 g of A & 300 g. of10% solution of B contains 30 g of B. Both these W ts. Are finally present in 500 g of mixture .
:. % Mass of `A= (10 XX 100)/500=2
` "and "% "Mass of" B = (30 xx 100)/500=6`


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