SOLUTIONS AND SOLUBILITY

SOLUTIONS

100

The substance in which the solute dissolves

What is the solvent?

200

A mixture that appears to be a single substance, where the solvent is water

What is an aqueous solution?

300

Which of the following is a mixture?  

NaCl(s)

NaCl(g)

NaCl(l)

NaCl(aq)

NaCl(aq)

400

If you double the amount of water into which a solute is dissolved, the amount of solute which can dissolve will __________________

Double

500

A mixture in which the solute particles are completely evenly mixed together is known as a __________ mixture.  

Homogeneous

Saturation

100

What is the maximum amount of NaNO₃ that can be dissolved in 100 g of water at 20 degrees Celsius?

88 g

200

If you have 120 grams of KI dissolved into 100 grams of water at 10 degrees, what type of solution do you have?  (Saturated, Unsaturated, Supersaturated?)

Unsaturated

300

The ability of a solute to dissolve in a substance at a certain temperature.

What is solubility?

400

If you have 10 grams of KClO₃ dissolved into 100 grams of water at 60 degrees C, how many more grams can you dissolve before a saturated solution is produced?

18 g

500

Most substances increase in solubility when temperature is raised.  Some substances become less soluble.  What type of matter are the substances that become less soluble with an increase in temperature?

Gases

Concentration

100

If you have 30 moles of NaCl dissolved in 1.5 Liters of solution, what is the molarity of the solution?

20 M

200

If you have 30 grams of salt dissolved in 10,000 grams of solution, what is the ppm of the salt within the solution?

3,000 ppm

300

If you are given 3.2 liters of a 1.8 M solution, what is the number of moles that are dissolved in the solution?

5.76 moles

400

The concentration of a solution is 1.8 ppm.  If the mass of the solution is 150,000 grams, what is the mass of the solute that has been dissolved?

0.27 grams

500

You have 28 grams of NaCl dissolved into 2 liters of solution.

First, what is the number of moles of NaCl that were dissolved?

Second, what is the molarity of the resulting solution?

0.5 moles 

0.25 M

Separation Techniques and Mixtures

100

A separation technique used to separate solids from liquids based upon size is...

Filtration

200

Ethanol and Water are two liquids that are frequently mixed together, these two liquids can be separated from one another due to their differences in boiling points through...

Distillation

300

According to Table F, If you were to place PbCl₂ into water and stir, what type of mixture would you have?

Heterogeneous

400

If you were to place Na₂SO₄ into water and stir, what type of mixture would you have?

Homogeneous

500

If you have salt water and wanted to separate the water from the salt, what would you do?  What is this process called and why is it effective for separating salt from water?

distillation.  effective due to the differences in boiling points.  

Wild Card

100

When a solute is added to a solution the freezing point ________________ and the boiling point ______________.

Freezing point decreases

Boiling point increases

200

Hexane is a non-polar solvent.  Which of the following covalent solutes would be dissolve into Hexane?

NH₃

C₂H₆

H₂O

C2H6

300

Which of the following solutes will have the greatest effect on the freezing and boiling points of a solution?

C₆H₁₂O₆ 

NaF

MgCl₂

MgCl₂

400

Which of the following solutions would have the highest boiling point and the most electrical conductivity?

1.0 ppm NaCl(aq)

1.0 ppm Na₂O_(aq)

1.0 ppm CO₂(aq)

1.0 ppm Na₂O

500

If PbBr₂ was placed into water and stirred, what would be the best method to separate the PbBr₂ out of the water, and why?

Filtration because PbBr₂ is insoluble