Free Printable Hydrates

1.

Name the following hydrate KNO₃* 3H₂O

4 lines

2.

Crucible, cover: 17.8 g

Crucible, cover, and hydrate: 23.9g

Crucible, cover, and salt: 21.5g

Calculate % of water lost.

4 lines

3.

What is the correct chemical formula for barium hydroxide octahydrate?

(a)

4.

What is the correct formula for Sodium Oxide Tetrahydrate?

a)

NaO * 3H₂O

b)

NaO₂ * 5H₂O

c)

Na₂O * 3H₂O

d)

Na₂O* 4H₂O

5.

Calculate the percentage of water in :

K₂CO₃ · 4H₂O

(a)

6.

Name the following ionic compound: MgCO₃*4H₂O

4 lines

7.

A 14.67 g sample of a hydrate of magnesium carbonate was heated to drive off the water. The mass was reduced to 8.93 g. What is the percentage of water lost?

(a)

8.

Name the following hydrate: $KNO_3 \times 3H_2O$

a)

Potassium nitrate trihydrate

b)

Potassium nitrate dihydrate

c)

Potassium nitrate monohydrate

d)

Potassium nitrate tetrahydrate

9.

Crucible, cover: 17.8 g; Crucible, cover, and hydrate: 23.9 g; Crucible, cover, and salt: 21.5 g. Calculate % of water lost.

a)

10.04%

b)

15.06%

c)

20.08%

d)

25.10%

10.

What is the correct chemical formula for barium hydroxide octahydrate?

a)

$Ba(OH)_2 \times 8H_2O$

b)

$Ba(OH)_2 \times 6H_2O$

c)

$Ba(OH)_2 \times 4H_2O$

d)

$Ba(OH)_2 \times 2H_2O$

11.

What is the correct formula for Sodium Oxide Tetrahydrate?

a)

$NaO \times 3H_2O$

b)

$NaO_2 \times 5H_2O$

c)

$Na_2O \times 3H_2O$

d)

$Na_2O \times 4H_2O$

12.

Calculate the percentage of water in $K_2CO_3 \times 4H_2O$ .

a)

15.5%

b)

18.4%

c)

21.6%

d)

24.3%

13.

Name the following ionic compound: $MgCO_3 \times 4H_2O$ .

a)

Magnesium carbonate tetrahydrate

b)

Magnesium carbonate dihydrate

c)

Magnesium carbonate monohydrate

d)

Magnesium carbonate pentahydrate

14.

A 14.67 g sample of a hydrate of magnesium carbonate was heated to drive off the water. The mass was reduced to 8.93 g. What is the percentage of water lost?

a)

39.13%

b)

39.1%

c)

38.9%

d)

38.7%

15.

Which of the following is a common property of hydrates?

a)

They are always soluble in water.

b)

They always contain a fixed number of water molecules.

c)

They are always colorless.

d)

They always decompose at room temperature.

Hydrates

Total questions: 15

Worksheet time: 15mins

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