Dilutions and concentration

A measure of how much solute is dissolved in solution or "strength" of solution is called......

• concentrated

• concentration

• dilute

• dilution

How do chemists calculate molarity?

• grams/mole

• moles/Liter

• ounces/container

The higher the molarity, the ________ the solution

• more concentrate

• less concentrated

The lower the molarity, the ________ the number of particles in the solution

• fewer

• greater

The term molar, which describes a solution's concentration, is written as?

• M

• mol

• g

• g/L

A dilution is when

• solute is added to the volume of stock solution

• water is added to the volume of stock solution

• solute is removed from the volume of stock solution

• water is removed from the volume of stock solution

A solution is made by dissolving 0.50 mole of NaCl in enough water to give a final volume of 400.0 mL. What is the molarity of the solution?

• 0.10 M

• 0.40 M

• 1.25 M

• 2.33 M

What is a concentrated solution?

• a solution that has a large amount of solute in a large volume of solvent

• a solution that has an equal amount of solute in the same volume of solvent

• a solution that has a small amount of solute in a large volume of solvent

• a solution that has a large amount of solute in a small volume of solvent

Which solution is more concentrated?

Solution 1:

500 mL of water

100 g of salt

Solution 2:

500 mL of water

90 g of salt

• Solution 1

• Solution 2

• They have the same concentration

• I have no idea

Which is the most dilute solution?

• 4M NaOH

• 0.5M NaCl

• 1M KCl

• 1.5M HCl