Solutions and Molarity

What does "like dissolves like" mean?

• Solute and solvent must have different IMFs in order to make a homogenous solution

• Both solute and solvent must have similar IMFs in order to make a homogenous solution

• Both solute and solvent must be the same color in order to make a homogenous solution

• Solutes must be a fine powder and will dissolve in any solvent

True or False? The higher the concentration of a solution the less solutes it has in it.

• True

• False

Tags

NGSS.HS-PS1-5

___________ refers to the amount of solute dissolved in a given amount per volume of solution

• Concentration

• Dilution

• Precipitation

• None of the above

Tags

NGSS.HS-PS1-5

When you make a dilution, which of these values remains constant?

• The molarity (M)

• The total moles of solute

• The volume (V)

• The concentration

How do we make a dilution?

• Add more solute

• Remove solute

• Remove solvent

• Add more solvent

A solution that has water as the solvent is called a(n).....

• Aqueous Solution

• Water-Based Solution

• Organic Solution

• Dilute Solution

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

How many moles of solute are present in 50.0 mL of 0.20M KNO₃?

• 10.0 moles solute

• 0.05 moles solute

• 1.00 moles solute

• 0.01 moles solute

Tags

NGSS.HS-PS1-7

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

How many mL of 1.0M KBr solution would you need to prepare 250 mL of a 0.2M dilution?

• 175 mL

• 250 mL

• 50 mL

• 5 mL