Free Printable Concentration of Solutions

1.

A solution with only a small amount of solute is called a ______ solution.

a)

dilute

b)

saturated

c)

concentrated

d)

homogeneous

2.

A solution with a large amount of solute is called _________

a)

dilute

b)

saturated

c)

concentrated

d)

homogeneous

3.

A ratio comparing the amount of solute to the amount of solution.

a)

concentration

b)

solution

c)

mass

d)

volume

4.

The mass of solution is equal to the difference of the masses of solvent and solute.

a)

True

b)

False

5.

In solid-liquid solutions, volume of solution is larger than the volume of solvent.

a)

True

b)

False

6.

In liquid-liquid solutions, volume of solution can be larger than volumes of sum of solute and solvent.

a)

True

b)

False

7.

To calculate the concentration of a solution, multiply the mass of the solute (grams) with the volume of solvent (mL).

a)

True

b)

False

8.

If 3.0 g of sugar is mixed in water to make 30 mL of solution, its concentration is:

a)

0.1 g/mL

b)

0.1 %

c)

0.1 mL/g

d)

1.0%

9.

Suppose that a solution was prepared by dissolving 18.0 g of sugar into 100g of water. The percent by mass in the nearest whole number would be calculated as follows:

a)

15%

b)

18%

c)

6%

d)

82%

10.

If a solution is made by taking 70 mL of ethanol and adding enough water to make 750 mL of solution, the percent volume is:

a)

9.3%

b)

10.7%

c)

0.09%

d)

70%

11.

If a solution is prepared from 5g NaCl in enough water to make a 120mL solution, the mass-volume concentration is:

a)

0.04%

b)

4.2%

c)

24%

d)

6.7%

12.

A 20g tube of cream contains 1.2% (w/w) of active ingredient. What is the mass of the active ingredient does the cream contain?

a)

0.24%

b)

2.4%

c)

0.94%

d)

9.4%

13.

Which formula will you use for a problem looking for concentration by volume of ethanol in a solution?

a)

$\frac{volume\ of\ solute}{volume\ of\ solution}x100$

b)

$\frac{mass\ of\ solute}{mass\ of\ solution}x100$

c)

$\frac{mass\ of\ solute}{volume\ of\ solution}x100$

d)

$C=\frac{m}{v}$

14.

Which formula will you use for a problem looking for the mass-volume concentration of NaCl in a solution?

a)

$\frac{volume\ of\ solute}{volume\ of\ solution}x100$

b)

$\frac{mass\ of\ solute}{mass\ of\ solution}x100$

c)

$\frac{mass\ of\ solute}{volume\ of\ solution}x100$

d)

$C=\frac{m}{v}$

Concentration of Solutions

Total questions: 14

Worksheet time: 10mins

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