Question

A solution contains 10 g of sugar in 140 g of water.what is the concentration in terms of mass by mass percentage of the solution

A)7.1%
B)8.2%
C) 6.6%
D)7.7%

Answer 1

8.2%

hope its kindly help u

Answer 2

Given:-

→Mass of sugar (solute) = 10g

→Mass of water (solvent) = 140g

To find:-

→Concentration of the solution

(mass/mass %)

Solution:-

Here, mass of solute and mass of solvent are given. So,firstly let's calculate the total mass of the solution. It can be calculated as follows:-

Mass of solution:-

= Mass of solute + Mass of solvent

= (10+140) g

= 150g

Hence,we have got the mass of the solution as 150g.

Now,let's calculate the concentration of the solution.

Concentration of a solution:-

=Mass of solute/Mass of solution × 100

= 10/150×100

= 100/15

= 6.6%. (approximately)

Thus,concentration of the solution in terms of mass by mass percentage is 6.6% and hence correct option is (C).