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During an experiment, two students were ...

During an experiment, two students were asked to prepare a 10% (Mass/mass) solution of salt in water. Rahul dissolved 10 g of salt in 100 g of water while Priya prepared it by dissolving 10 g of salt in water to make 100 g of solution.
(a) Do the two solutions have same concentration ? (b) Calculate mass/mass percentage in each case. (c ) Whose measurements are correct for the experiment ?

Text Solution

Verified by Experts

(a) No, the two solutions donot have same concentration
(b) In the solution prepared by Rahul,
Mass of salt = 10 g
Mass of solution = (100 + 10) g.
Mass percentage of salt = `((10 g))/((110 g))xx 100 = 9.09 %`
In the solution prepared by Priya, Mass of salt = 10 g
Mass of solution = 100 g
Mass percentage of salt = `((10 g))/((100 g))xx 100 = 10 %`
(c ) The measurements made by Priya are correct.
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