During an experiment the students were asked to prepare a 20% (mass/mass) solution of sugar in water. Ram dissolved 20g of sugar in 100g of water while Sam prepared it by dissolving 20g of sugar in water to make 100g of the solution. Whose method of preparation produced 20% (mass/ mass) solution of sugar?
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CHEMISTRY
During an experiment, the students were asked to prepare a 10% solution of sugar in water. Ramesh dissolved 10g of sugar in 100g of water while Sarika prepared it by dissolving 10g of sugar in water to make 100g of the solution.
Are the two solutions of the same concentration?
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No, the two solutions were of different concentrations.
Mass%=
(massofsolute+massofsolvent)
massofsolute
×100
Solution made by Ramesh-
Mass%=
(100+10)
10
100=
110
10
×100=9.09%
Solution made by Sarika-
Mass%=
100
10
×100=10%
∴ Both have different concentrations
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