Question

20% w/w solution of sugar in 180 g of water. What is the required amount of sugar.

Answer 1

Answer:

A solution contains 20g of sugar dissolved in 180g water calculate the concentration in tems of mass by mass percentage of solution.

Ans. Sugar dissolves = 20g

Water ( Mass ) = 180g

.°. Total Mass Of The Solution= 180g + 20g

= 200g

Therefore, mass by mass percentage of the solution = Mass of the solute / Total mass of the solution × 100

i.e, 20/200 × 100

=10% Ans.

Explanation:

Answer 2

Explanation:

solute (sugar) = 20g

solvent (water) = 180g

solution = (solute + solvent)

= 20 + 180

= 200

mass of solute

____________ ×100 = 20/ 200×100 = 10%

mass of solution

answer is 10%