# Practice - Molarity Questions!

18 Questions | Total Attempts: 241  Settings Create your own Quiz Concept and Calculations

• 1.
What are the units for molarity?
• A.

Moles per liter

• B.

Liter per moles

• C.

Moles per gram

• D.

Grams per mole

• 2.
What is the dilution equation?
• A.

M1V1 = M2V2

• B.

M1V2 = M2V1

• C.

M1V1 / M2V2

• D.

Moles per liter

• 3.
15.8 g of KCl is dissolved in 225 mL of water. Calculate the molarity. Don't forget the units M.
• 4.
1.50 g of NaCl is dissolved in 100.0 mL of water. Calculate the concentration. Don't forget the units M.
• 5.
50.0 g of NaCl is dissolved in 200.0 mL of water, calculate the molarity. Don't forget the units M.
• A.

4.31 M

• B.

4.3 M

• C.

4 M

• D.

4.3103 M

• 6.
25.2 g of NaCl is dissolved in 365 mL of water, calculate the molarity. Don't forget the units M.
• 7.
150.0 g of NaCl is dissolved in 0.2500 L of water, calculate the molarity. Don't forget the units M.
• 8.
55.6 g of NaCl is dissolved in 0.562 L of water, calculate the molarity. Don't forget the units.
• 9.
Calculate the mass of KCl required to prepare 250. mL of 0.250 M solution. Don't forget the units g.
• 10.
Calculate the volume of 0.30 M KCl solution that contains 6.00 g of KCl. Don't forget the L.
• 11.
Calculate the volume of 0.250 M H2SO4 that contains 0.250 g H2SO4.  Don't forget the L.
• 12.
How many moles of NaCl are in 250.0 mL of a 0.200 M solution. Don't forget the unit moles.
• 13.
If I add 25 mL of water to 125 mL of a 0.15 M NaOH solution, what will the molarity of the diluted solution be? Don't forget the units M.
• 14.
Which ice coffee would you expect to taste the least sweet?
• A.

0.1 M

• B.

2.5 M

• C.

5 M

• D.

4.8 M

• 15.
When you make a dilution, which of these values remains constant?
• A.

The molarity (M)

• B.

The total moles of solute

• C.

The volume (V)

• D.

The concentration

• 16.
As we dilute a solution...
• A.

The volume increases and the molarity (M) increases

• B.

The volume increases and the molarity (M) decreases

• C.

The volume decreases and the molarity (M) increases

• D.

The volume decreases and the molarity (M) decreases

• 17.
What does 44 M mean?
• A.

44 molarity over liters

• B.

44 moles per 1 liter

• C.

44 molarity per liters

• D.

44 liters per mole

• 18.
Compare the number of moles of solute before dilution with the number of moles of solute after dilution.
• A.

Total number of moles in the solution doesn't change but the number of moles per liter changes

• B.

Number of moles don't change before or after dilution

• C.

Total number of moles gets less with dilution

• D.

Total number of moles increases after a dilution

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