CBA 5

Stirring the solution increases the rate of dissolution (rate of dissolving).

• True

• False

The smaller the particle size the faster the rate of dissolution (rate of dissolving).

• True

• False

Which of the following statements is true about how using smaller salt crystals would affect the rate of making a salt solution in water?

• Smaller crystals increase the surface area and slow down dissolving.
• Smaller crystals decrease the surface area and speed up dissolving.
• Smaller crystals increase the surface area and speed up dissolving.
• Smaller crystals decrease the surface area and slow down dissolving.

What combination would dissolve a solid solute the fastest?

• high temperature, no stirring

• no heat, no stirring

• sugar cube, no heat

• high temperature, stirring

A polar solute is likely to dissolve in a ________________ solvent.

• Polar

• Non-polar

What is a solvent?

• A solvent is a substance that dissolves a solute, resulting in a solution.

• A solvent is a substance that separates a solute, resulting in a solution.

• A solvent is a substance that solidifies a solute, resulting in a solution.

• A solvent is a substance that evaporates a solute, resulting in a solution.

Four chemical solutions are shown above. Which of the following solutions would correspond to a weak electrolyte?

• IV

• III

• II

• I and II

Solid or liquid that is being dissolved? (a)  

• solute
• solvent
• solution
• solubility

What is the molarity of 3 mole of hydrochloric acid in 3 L of water. 

• 3
• 1
• 6
• 9

What is the molarity of 1 mole of Ba+ in 2 L of water

• 1 M
• 2 M
• .5 M
• .25 M