A Solution contains `30` g of sugar dissolved in `370` g of water, Calculate the concentration of this solution.

Options

A. `7.5%`
B. `20%`
C. `2.6%`
D. `4%`

Answer

A

Explanation

A solution contains a solid solute (sugar ) dissolved in a liquid solvent (water),so we have to calculate the concentration of this solution in terms of the mass percentage of solute (sugar ) we, Know that :
Concentration of solution `=("Mass of solute")/("Mass of solution ")xx100`
here, Mass of solute (sugar )=30g
And ,Mass of solvent (water)=370g
So ,Mass of solution = Mass of solute + Mass of solvent
=30+370
=400 g
Now ,Putting the values Of mass of solute and mass of solution in the above formula formula ,WE get :
Concentration of solution `=(30)/(400)xx100`
`=(30)/(4)`
7.5 per cent (or 7.5% )
THus , the concentration of this sugar solution is 7.5 per cent (or that it is a 7.5 % sugar solution).