Question

A solution contains 56 g of suger in 900g of water. calculate the concentration in term of mass by mass percentage of the solution.​

Answer 1

Given :

➳ Mass of solute (sugar) = 56g

➳ Mass of solvent (water) = 900g

To Find :

⟶ Percentage mass by mass concentration of the solution.

SoluTion :

➺ Name : Mass percentage

➺ Symbol : %w/W

➺ Definition : Amount of solute in grams present in 100g of solution.

➺ Effect of temperature : No effect

➺ Formula :

$\bigstar\:\underline{\boxed{\bf{\%\dfrac{w}{W}=\dfrac{Mass\:of\:solute}{Mass\:of\:solution}\times 100}}}$

⇒ %w/W = 56/(56+900) × 100

⇒ %w/W = 5600/956

⇒ %w/W = 5.58%

Answer 2

Solution :

Mass of sugar (solute) = 56g

Mass of solvent (water) = 900 g

Mass of solution = (56 + 900) = 956 g

Concentration in term of mass percentage = Mass of soluteMass of solution×100=(56g)(956g)×100=5.58%