1 Solutions
An aqueous solution of non-electrolyte 'A' with molecular mass 60 contains 6 g in 500 ml and has a density equal to 1.05. The molality of solution is
1) 0.30
2) 0.25
3) 0.19
4) 1.25
SOLUTION
Mass of solution = 500 ×× 1.05 = 525 g Mass of solvent = 525 - 6 = 519 g
Molality = 6×1000 / 60×519 = 0.192 M .
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