Dilutions and Concentrations

Which is an example of a solute?

• Egg whites
• Sugar
• Water
• Acetone

Which is an example of a solvent?

• Salt
• Egg whites
• Water
• Sugar

The amount of solute dissolved in a given amount of solvent.

• dilution

• concentration

• saturated solution

• supersaturated mixture

What does it mean to dilute a solution?

• lower the concentration of solute per solvent
• increase the concentration of solute per solvent

You can make a solution more concentrated by adding __________.

• solute
• solvent
• water

Tags

NGSS.HS-PS1-5

When you dilute a solution, which of these values remains constant?

• The molarity (M)

• The total moles of solute

• The volume (V)

• The concentration

As we dilute a solution.....

• The volume increases and the molarity (M) increases

• The volume increases and the molarity (M) decreases

• The volume decreases and the molarity (M) increases

• The volume decreases and the molarity (M) decreases

Tags

NGSS.HS-PS1-5

How many mL of stock solution of 2M NaCl do you need to prepare 100 mL of 0.150M NaCl?

• 7.5 mL

• 15 mL

• 1333 mL

• 200 mL

Calculate the Molarity in a solution containing 40.0 g of NaCl dissolved in 500.0 ml of H2O.

• 0.08 M

• 12.5 M

• 1.37 M

• 0.74 M

If I have 340 mL of a 0.5 M NaBr solution, what will the concentration be if I add 560 mL more water to it?

• .188 M

• 3.78 M

• .389 M

• 1.76 M