Question

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. (i) Are the two solutions of the same concentration? (ii) Compare the mass % of the two solutions

Answer 1

Answer:

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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