CBSE Class 11-science Answered
a solution contains 20g of NaCl in 95cm^3 solution.the density of solution is 1.25g/ cm^3.What is the mass percent of NaCl?
Asked by bharti | 12 May, 2013, 08:36: PM
Expert Answer
1 cm3 solutions has mass = 1.25g
95 cm3 have mass = 1.25 x 95 =118.75g
now 118.75 g of solution contains = 20 g of NaCl
100 = 20 x 100 /118.75
=16.84%
Answered by | 13 May, 2013, 10:50: AM
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