Chemistry Quiz: Molarity Questions!
- 1.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
- 2.What are the units for molarity?
- A.
Moles per liter
- B.
Liter per moles
- C.
Moles per gram
- D.
Grams per mole
- 3.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
- 4.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
- 5.What is the dilution equation?
- A.
M1V1 = M2V2
- B.
M1V2 = M2V1
- C.
M1V1 / M2V2
- D.
Moles per liter
- 6.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
- 7.15.8 g of KCl is dissolved in 225 mL of water. Calculate the molarity. Don't forget the units M.
- 8.1.50 g of NaCl is dissolved in 100.0 mL of water. Calculate the concentration. Don't forget the units M.
- 9.50.0 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
- 10.25.2 g of NaCl is dissolved in 365 mL of water, calculate the molarity. Don't forget the units M.
- 11.150.0 g of NaCl is dissolved in 0.2500 L of water, calculate the molarity. Don't forget the units M.
- 12.How many moles of NaCl are in 250.0 mL of a 0.200 M solution. Don't forget the unit moles.
- 13.55.6 g of NaCl is dissolved in 0.562 L of water, calculate the molarity. Don't forget the units.
- 14.Calculate the mass of KCl required to prepare 250. mL of 0.250 M solution. Don't forget the units g.
- 15.Calculate the volume of 0.30 M KCl solution that contains 6.00 g of KCl. Don't forget the L.
- 16.Calculate the volume of 0.250 M H2SO4 that contains 0.250 g H2SO4. Don't forget the L.
- 17.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.
- 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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