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 | 17th 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 | 17th May, 2017, 03:21: PM