CBSE Class 11-science Answered
When 400 g of a 20% solution by weight was cooled, 50 g of solute precipitated. The percentage concentration of remaining solution is
Asked by Anil | 17 May, 2017, 03:07: PM
Expert Answer
Wt. of solution = 400g
Wt. of solute = 20 x 400/100 = 80 g
Wt. of solute precipitated = 50g
Wt. of solute remained in solution = 80-50 = 30g
Wt of solution remained = 400 – 50 = 350g
Hence % by weight = 30/350x 100 = 8.57%
Answered by Vaibhav Chavan | 17 May, 2017, 03:21: PM
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