During an experiment the students were asked to prepare a 10% (Mass/Mass) solution of sugar in water. Ramesh dissolved 10 g of sugar in 100 g of water while Sarika prepared it by dissolving 10 g of sugar in water to make 100 g of the solution.
(a) Are the two solutions of the same concentration?
(b) Compare the mass % of the two solutions.
Solution
1. No both the solution have different concentration.
2. In case of Ramesh it is 10 gram of solute in total 110 g solution ( 10 g sugar + 100 g water)
So concentration in mass % = 10 / 110 x 100 = 9.09 %
But in case of Sarika it is 10 gram of solute in total 100 g solution ( 10 g sugar + 90 g water)
So concentration in mass % = 10 / 100 x 100 = 10 %
The solution prepared by Ramesh contains less amount of solute than Sarika.
1. No both the solution have different concentration.
2. In case of Ramesh it is 10 gram of solute in total 110 g solution ( 10 g sugar + 100 g water)
So concentration in mass % = 10 / 110 x 100 = 9.09 %
But in case of Sarika it is 10 gram of solute in total 100 g solution ( 10 g sugar + 90 g water)
So concentration in mass % = 10 / 100 x 100 = 10 %
The solution prepared by Ramesh contains less amount of solute than Sarika.