Question

A solution contains 40 gram of common salt in 320 gram of water calculate concentration in terms of mass by mass percentage of solution

Answer 1

correct answer is 40 grams

Answer 2

Answer : The mass by mass percentage of solution is, 11.11 %

Solution : Given,

Mass of common salt (solute) = 40 g

Mass of water (solvent) = 320 g

First we have to calculate the mass of solution.

Mass of solution = Mass of solute + Mass of solvent = 40 + 320 = 360 g

Now we have to calculate the mass by mass percentage of solution.

$(m/m)\% \text{ of solution}=\frac{\text{Mass of solute}}{\text{Mass of solution}}\times 100=\frac{40}{360}\times 100=11.11\%$

Therefore, the mass by mass percentage of solution is, 11.11 %