Free Printable 8.4

Worksheets

8.4 - Dilution

Total questions: 18

Worksheet time: 44mins

Name

Class

Date

How do chemists describe the "strength" or concentration of a solution?

molarity

concentrated

diluted

strong

How do chemists calculate molarity?

grams/mole

moles/Liter

ounces/container

What is the molarity of 0.50 moles of NaCl in 0.25 L of solution?

1.0 M

0.5 M

2.0 M

1.5 M

Determine the molarity of 2.25 moles of sulfuric acid, H₂SO₄, dissolved in 725 mL of solution.

322 M

3.10 M

0.325 M

2.25 M

How many moles of NaCl are present in a solution with a molarity of 8.59 M and a volume of 125 mL?

10.74 mol

0.0695 mol

1.07 mol

62.7 mol

How many moles are needed to make 2.5 L of a 3.8 M solution?

9.5 mol

0.66 mol

1.5 mol

15 mol

If 20.0 mL of a 3.80 M solution is diluted to 50.0 mL, what is the ending molarity?

1.52

2.67

2.95

5.62

If 50.0 mL of a 0.78 M solution is diluted to 90.0 mL, what is the ending molarity?

.14

.43

14.2

43.3

If 30.0 mL of a solution that has a 1.82 M is diluted to 1.14 M, what is the VOLUME of my ending solution?

.07mL

19mL

47.9mL

63.8mL

10.

What is the volume (in liters) of a 0.20 M solution that contains 0.30 moles of Na₂SO₄ dissolved in it?

1.5 L

0.060 L

0.67 L

2.3 L

11.

Calculate the molarity of the following solution: 400.0 g of CuSO₄ (molar mass = 159.60 g/mol) in 4.00 L solution.

100. M

251 M

0.627 M

1.60 M

12.

What is the molarity of a solution made by diluting 26.5 mL of 6.00M HNO₃ to a volume of 250 mL?

15.9 M

0.636 M

0.642 M

1.59 M

13.

Which of the following is the Dilution Formula?

V₁M₁ = V₂M₂

M = m/V

V = mT

PV = nRT

14.

A dilution is when

solute is added to the volume of solution

water is added to the volume of solution

solute is removed from the volume of solution

water is removed from the volume of solution

15.

What is a mole?

6.022 x 10²³ items

a fuzzy critter

a chemistry thing

16.

The lower the molarity, the ________ the number of particles in the solution

fewer

greater

17.

Which sweet tea would you expect to taste the sweetest?

3.1M

2.5M

18.

$M\ =\frac{mol}{L}\ \ \ \ \ \ mol\ =M\ \times\ L$

How many moles of solute are dissolved in 0.125 L of 5.00 M NaCl?

0.625 mol NaCl

625 mol NaCl

36.5 g NaCl

0.04 mol NaCl

100 %

8.4 - Dilution

Total questions: 18

Worksheet time: 44mins

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