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the solubility of KCL is 40 gram in hundred gram in water the density of solution is 1.4 gram /litres what is the w/v percentage of KCL is the solution |
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Answer» 40% is the correct answer. The solubility of KCL = 40 gram density of solution = 1.4 gram /LITRES To find : w/v percentage of KCL is the solution Solution: We know that, to calculate density Den = mass / volume Mass = 100+40 = 140 V is volume density=(40+100)/v = 1.4 140=1.4v v=140/1.4 v= 100 We know that w/v%=mass of KCl in 100 ml of solution. 140/1.4 ml contains 40 g of KCl. 100 ml will contain (100 x 40X 1.4/140 )= =40% Hence, 40% is the correct answer. |
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