Q1:
A sugar solution was made by mixing 14 g of glucose with 100 g of water. What is the percentage concentration by mass of the glucose in the solution? Give your answer to one decimal place.
- A (m/m)
- B (m/m)
- C (m/m)
- D (m/m)
- E (m/m)
Q2:
Which of the following equations can be used to calculate the percentage by volume, , of a solution?
- A
- B
- C
- D
- E
Q3:
Which of the following equations can be used to calculate the percentage by mass, , of a solution?
- A
- B
- C
- D
- E
Q4:
A 250 mL solution of hand sanitizer contains 162 mL of propan-2-ol. What is the percentage concentration by volume of propan-2-ol in this solution? Give your answer to the nearest whole percentage.
- A (v/v)
- B (v/v)
- C (v/v)
- D (v/v)
- E (v/v)
Q5:
What volume of water must be added to a 125 mL solution of ethanol to change its percentage volume from (v/v) to (v/v)? Give your answer to the nearest whole number.
Q6:
A 1.20 L bottle of vinegar contains (v/v) of ethanoic acid. What volume of ethanoic acid does the bottle of vinegar contain? Give your answer to two decimal places.
Q7:
50 g of an anti-inflammatory ointment was found to contain 1.2 g of the main active ingredient. What is the percent by mass of the active ingredient in this ointment?
- A (m/m)
- B (m/m)
- C (m/m)
- D (m/m)
- E (m/m)
Q8:
A 30 g tube of antiseptic cream contains (w/w) of cetrimide. What mass of cetrimide does the cream contain?
Q9:
60 g of a (m/m) solution was mixed together with 120 g of a (m/m) solution. What is the percentage concentration by mass of the new solution?
- A (m/m)
- B (m/m)
- C (m/m)
- D (m/m)
- E (m/m)
Q10:
A saline solution was prepared by dissolving 4.5 g of in water to produce a solution with a total volume of 1 000 mL. What is the mass/volume percentage concentration, (m/v), of the saline solution?
Q11:
Which of the following is true about an ethanol solution of percentage concentration?
- A Every 100 mol of the ethanol solution contains 70 mol of ethanol and 30 mol of water.
- B Every 100 mL of the ethanol solution contains 70 mL of water and 30 mL of ethanol.
- C Every 100 mL of the ethanol solution contains 70 mol of ethanol and 30 mol of water.
- D Every 100 mL of the ethanol solution contains 70 mL of ethanol and 30 mL of water.
Q12:
In the table shown below, the most concentrated solution is , while the most diluted solution is .
| Solution | Mass (g) | |
|---|---|---|
| Solute | Solvent | |
| A | 5 | 100 |
| B | 5 | 200 |
| C | 5 | 300 |
| D | 5 | 400 |
- A D, A
- B A, D
- C C, D
- D A, B
Q13:
Calculate the volumes of water (solvent) and methanol (solute) that are used to prepare 0.5 L of methanol solution whose volume percentage concentration is .
- A Methanol volume = 475 mL, water volume = 25 mL
- B Methanol volume = 125 mL, water volume = 375 mL
- C Methanol volume = 25 mL, water volume = 475 mL
- D Methanol volume = 375 mL, water volume = 125 mL
Q14:
Calculate the volume of gasoline that is used to dissolve 0.1 L of oil to form a solution of a percentage concentration.
- A 400 mL
- B 500 L
- C 400 L
- D 500 mL
Q15:
The volume percentage (v/v) is the percentage of the volume of solute in of a .
- A 1 L, solution
- B 1 L, solvent
- C 100 mL, solution
- D 100 mL, solvent
Q16:
Calculate the percentage concentration of fructose solution whose one litre contains 2 moles of the solute. Give your answer to one decimal place. [, , ]
- A
- B
- C
- D
Q17:
0.1 mol of is present in 3 L of sodium hydroxide solution. Calculate the percentage concentration of that solution, giving your answer to three decimal places. [,,]
- A
- B
- C
- D
Q18:
By dissolving 25 mL of oil in an amount of benzene, a solution of percentage concentration (v/v) is obtained. Calculate the volume of benzene used to prepare the solution. Give your answer to one decimal place.
- A 62.5 mL
- B 65.0 mL
- C 87.5 mL
- D 37.5 mL
Q19:
Calculate the masses of a solute and solvent that are used to prepare 250 g of sodium hydroxide solution with a mass percentage of (m/m).
- A Solute mass = 50 g, solvent mass = 300 g
- B Solute mass = 20 g, solvent mass = 230 g
- C Solute mass = 50 g, solvent mass = 200 g
- D Solute mass = 40 g, solvent mass = 210 g
Q20:
To make a solution of table salt, 2 mol of is dissolved in 0.351 kg of water. Calculate the percentage concentration of the resulting solution. Give your answer to one decimal place. [, ]
- A
- B
-
C
- D
Q21:
Calculate the mass of a sodium carbonate’s solution whose mass percentage is , and it contains 0.5 mol of the solute. [,,]
- A 265 g
- B 255 g
- C 38 g
- D 530 g
Q22:
The percentage of the mass of solute in of a is known as the mass percentage (m/m).
- A 100 g, solution
- B 1 kg, solvent
- C 100 g, solvent
- D 1 kg, solution
Q23:
Consider the following chart.
What is the mass percentage of the solution at ? Give your answer to one decimal place.
- A
- B
- C
- D
Q24:
Which of the following can be used to calculate a solution’s mass?
- A =
- B =
- C =
- D =
Q25:
Calculate the mass of water that is needed to dissolve 50 g of silver nitrate to make a solution whose mass percentage concentration is .
- A 250 g
- B 150 g
- C 200 g
- D 100 g
