Question

During an experiment the student were asked to prepare a 10%
(Mass/Mass) solution of sugar in water. Ravi dissolved 10 g of sugar
in 100 g of water while shiva prepared it by dissolving 10 g of sugar

in water to make 100 g of the solution.


a) Are the two solution of the same concentration.

b) Compare the mass% of the two solutions.​

Answer 1

Answer:

OK Right answer 9.09% OK

Answer 2

Answer:

No

Explanation:

Mass percent is defined as the percentage of each element found by dividing the mass contribution of an element by its total molecular mass.

Mass percent is the ratio of the mass (or weight) of the element or solute to the mass (or weight) of the compound/solution converted into percentage. Conversion to percentage is done by multiplying the obtained ratio by 100.

Mass percent = ( mass of solute / mass of solution ) × 100 %

Mass of solution = Mass of solute + mass of solvent.

Solution made by Ravi

Mass % = 10 × 100 %

100 + 10

= 9.09 %

Solution made by Shiva

Mass % = 10 × 100 %

100

= 10 %

No, the two solutions were of different concentrations.

∴ Both have different concentrations.

Comparison :

Concentration of shiva's solution is greater than ravi's solution .

Difference = ( 10 - 9.09 ) %

= 0.91 %

Hope this helps you