Concentration of solutions

Solutions can be described qualitatively using the terms dilute and ___________.

• concentrated

• light

• color

To find ________________ we divide mass ofg solute with the mass of solution times 100.

• percent by mass

• percent by volume

• parts per hundred

What is the perecent by mass of a solution that contains 12.0 g of solute per 200.0 g solution?

• 5.6 %

• 6 %

• 2.4 %

How do we compute for percentage by volume?

• volume of solute divided by volume of solution then multiply by one hundred percent

• volume of solution divided by volume of solute then multiply by one hundred percent

• add volume of solute and solvent then multiply by one hundred percent

What mass of water should be added to 22.0 g of KCl to make 5.50% by mass solution?

• 400 g

• 25 g

• 0.25 g

What is the mass percent of 125 grams of fructose dissolved in 375 ml of water?

• 25.0%

• 5.5%

• 250%

Calculate the mass % concentration of 38.5 aqueous solution that contains 1.96 g of Nabr.

• 5.2%

• 5.09%

• 509%

Which solution is more diluted?

Solution 1:

1000 mL of water

60g of salt

Solution 2:

500 mL of water

60 g of salt

• Solution 1

• Solution 2

• They are equally diluted

What is the concentration, in percent by mass, of 0.62 g of solute in 45.0 g of solution?

• 0.014 %

• 0.13%

• 1.4 %

Which is an example of a solvent?

• salt

• water

• sand