Question

A solution is prepared by adding 40 grams of sugar in hundred gram of water calculate the concentration in term of mass by mass percentage of solution

Answer 1

solute-40g
solvent-100g
solution-100+40=140g

mass percentage= mass of solute/mass of solution ×100
= 40/140 ×100= 28.5%

Answer 2

Mass percentage of solution is 28.6%

Explanation:

To calculate the mass percentage ,we use the formula:

$\text{mass percent}=\frac{\text{mass of solute}}{\text{ of solute+ of solvent}}\times 100$

mass of solute (sugar) = 40 g

mass of solvent (water) = 100 g

$\text{mass percent}=\frac{\text{mass of sugar}}{\text{mass of sugar+ mass of water}}\times 100$

$\text{mass percent}=\frac{40g}{40g+100g}\times 100=28.6\%$

Thus mass percentage of solution is 28.6%

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