Water and Hydrates Quiz

You place a bottle of water in the freezer. The next morning, you open the freezer and find that the bottle has burst. Which property of water explains what happened?

• Water molecules are non-polar.
• Water molecules are cohesive.
• Water is a universal solvent.
• Water molecules expand upon freezing.

Large bodies of water, such as lakes and oceans, do not quickly fluctuate in temperature. What is the reason for this phenomenon?

• Water is an acid.
• Water is a versatile solvent.
• Water acts as a buffer.
• Water has a high heat capacity.

Water molecules have the ability to dissolve many solutes associated with cells. Of the following choices, which property allows water to dissolve solutes?

• polarity
• non-polarity
• high heat capacity
• VSEPR model

Water is essential for life. Its special properties make water the single most important molecule in plant life. Which of the following properties of water enable it to move from the roots to the leaves of plants?

• Water expands as it freezes.
• Water is an excellent solvent.
• Water exhibits cohesive behavior.
• Water is able to moderate temperature.

What is the difference between a hydrate and an anhydrate?

• An anhydrate is a hydrate with the water removed.
• A hydrate is an anhydrate with the water removed.
• A hydrate is necessary for producing water molecules, but an anhydrate isn't.
• An anhydrate is necessary for producing water molecules, but a hydrate isn't.

If there are three moles of H₂O for every one mole of LiClO₄ , then what is the hydrate formula?

• LiClO₄•3H₂O
• 3LiClO₄•3H₂O
• LiClO₄•(H₂O)3
• 3(LiClO₄)•3H₂O

What is the correct name for the compound, CaSO₄ •2 H₂O?

• carbon sulfate dihydrate
• calcium sulfur oxide dihydrate
• calcium sulfate dihydrate
• calcium sulfite dihydrate

What is the correct molecular formula for the compound, manganese (II) bromide tetrahydrate?

• MnBr₂•4H₂O
• MgBr₂•4H₂O
• MnBr₄•4H₂O
• Mn(BrO₂)₂•4H₂O
• MnBr₂•3H₂O

A 3.50 gram sample of a hydrate of copper sulfate yields 2.10 g of anhydrous copper (II) sulfate (CuSO₄) . What is ratio of moles of water to moles of hydrate?

• 9
• 7
• 4
• 6

140.5 g sample of NiSO₄ •X H₂O is heated until no further decrease in mass. The mass of the anhydrous salt is 77.5 g. Find the number of water molecules in the formula of this hydrate of nickel (II) sulfate.

• 4
• 7
• 9
• 11