Interim Review 2022

What is the solvent in a 5M HCl solution?

• HCl

• hydrogen chloride

• water

• molarity

Sodium chloride dissolves by

• the partial negative side of water (oxygen) surrounds the sodium ion

• the partial positive side of water (hydrogen) surrounds the sodium ion

• both a & b are correct

• neither a or b are correct

This picture represents

• solvation

• dissociation

• both a & b

• neither a or b

What factor will not affect the rate of dissolving of a solid solute?

• agitation (stirring)

• pressure

• crushing

• increasing the temperature

Which solution would be the LEAST concentrated?

• 5 g of solute in 20 g of solvent

• 10 g of solute in 30 g of solvent

• 20 g of solute in 80 g of water

• 25 g of solute in 110 g of solvent

This bottle of Hydrogen Peroxide is 12% by mass. What does this mean?

• 12 g are hydrogen peroxide and 100 g are water

• 12 g are water and 88 g are hydrogen peroxide

• 12 g are hydrogen peroxide and 88 g are water

• 12 g are water and 100 g are hydrogen peroxide

What are the proper steps for making a solution?

• 1. Add the solute to the flask. 2. Add just enough water to get the solute to dissolve. 3. Swirl. 4. Add enough water until it reaches the mark on the flask.

• 1. Put some water in the flask. 2. Add your solute. 3. Finish adding the water to the line. 4. Swirl.

• 1. Add the solute. 2. Fill to the line with water. 3. Swirl.

• 1. Convert grams to moles. 2. Mass out the moles. 3. Add solute to flask. 4. Swirl. 5. Add water until it reaches the line.

Which ionic compound dissociates into the most particles?

• copper (II) sulfate

• iron (III) chloride

• iron (III) hydrogen phosphate

• sucrose (C₁₂H₂₂O₁₁)

What "rule" of bonding is this an illustration of?

• Like dissolves like

• Unlike dissolves like

• Unlike dissolves unlike

• None of these

Table sugar (sucrose) is shown here dissolving in water. Determine the true statement.

• The sugar dissociates.

• The sugar splits apart into its ions.

• The sugar is undergoing solvation.

• The sugar's negative side is attracted to water's oxygen end.