Hydrates Quiz

Name the following ionic compound: MgCO₃*4H₂O

Name the following hydrate KNO₃* 3H₂O

A hydrate of magnesium chloride is present and the following data is collected:

mass of crucible = 22.05 grams

mass of crucible + hydrate = 25.95 grams

mass of crucible and contents after heating = 23.19 grams

What is the percentage of water in this hydrate?

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?

Crucible, cover: 17.8 g

Crucible, cover, and hydrate: 23.9g

Crucible, cover, and salt: 21.5g

Calculate % of water lost.

What is the correct chemical formula for barium hydroxide octahydrate?

A compound is a hydrate when it...

• is composed of only hydrogen and oxygen
• is a state of water
• traps water inside of the compound
• repels water from the compound

What is the correct formula for Sodium Oxide Tetrahydrate?

• NaO * 3H₂O

• NaO₂ * 5H₂O

• Na₂O * 3H₂O

• Na₂O * 4H₂O

Which of the following shows Magnesium Chloride Hexahydrate?

• MgCl₂ · 7 H₂O

• MgCl₂ ·4 H₂O

• MgCl₂ · 6 H₂O

• MgCl₂ ·5 H₂O

Calculate the percentage of water in :

K₂CO₃ · 4H₂O