Question

During an experiment the students were asked to prepare 10% (m/m) solution of sugar

(3)

in water. Rakesh dissolved 10 gm of sugar in 100 gm of water. While Rasika prepared it

by dissolving 10 gm of sugar in water to make 100 gm of solution.

i) Are the two solution of the same concentration?

ii) Compare the mass percentage of two solutions​

Answer 1

Answer:

Solution

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.

Explanation: