Chemistry Chapter 16 Review

Properties of Solutions

100

These are the 3 factors that affect solubility.

What are agitation, temperature and surface area of the solute particles?

200

True or False: The solubility of solid solutes increases with temperature.

What is True?

300

True or False: The solubility of gaseous solutes increases with temperature.

What is False.

400

This is the mass of sodium chloride that can be dissolved by 100 mL of water at 0^oC.

[Use the Solubility by Temperature table that was handed out in class.]

What is 35.65 g?

500

A 250 g solution that contains 300 g of AgNO₃ at 50^oC is... (unsaturated, saturated, supersaturated).

What is unsaturated?

Concentrations

100

You have an aqueous 200 mL unsaturated solution of NaCl. Will the solution become more or less concentrated if you add 50 mL of water?

What is less concentrated?

200

This is the moles of solute divided by the litres of solution.

What is molarity?

300

This is the moles of solute divided by the mass of the solvent.

What is molality?

400

There are 50 mL of ethanol in a solution that has a total volume of 500 mL. This is the percent by volume of ethanol in the solution.

What is 10% (v/v)?

500

In terms of molarity or molality, the value 15.0 m refers to this.

What is molality?

Colligative Properties

100

These are properties that depend on the number of solute particles, not the type of solute particles in a solution.

What is colligative?

200

These are the 3 colligative properties.

What are vapor pressure lowering, boiling point elevation, and freezing point depression?

300

You have added salt to the water that you are attempting to boil. Will the boiling point increase or decrease?

What is increase?

400

You can add 1 mol of NaCl or 1 mol of BaCl₂ to 500 mL of water. Which will have a greater impact on the freezing point of the solution?

What is BaCl₂?

500

When solving for the freezing point of a solution you should use:

a) k_b and M

b) k_b and m

c) k_f and M

d) k_f and m

What is d) k_f and m?

Electrolytes

100

This is any substance that conducts electricity when dissolved in water.

What is an electrolyte?

200

This type of compound are electrolytes.

What is ionic?

300

How many of the following are electrolytes?

C₆H₁₂O₆, NaCl, BeCl₂, CCl₄, NO₂

What is 2? (NaCl, BeCl₂)

400

Write the dissociation equation for MgCl₂.

What is 

MgCl_{2 (s)} ---> Mg²⁺_(aq) + 2 Cl^-_(aq)

500

Water, Sugar, Dextrose, Citric Acid, and Salt are the first 5 ingredients in Gatorade (according to heb.com). Which of those 5 ingredients are electrolytes?

What are citric acid and salt?

Calculations

100

A 500.0 g aqueous solution contains 2.50 mol of sugar. Determine the molarity of the solution.

What is 5.00 M? (or 5.00 mol/L)

200

2.00 x 10² g of ethanol (C₂H₅OH) is added to water to create a 1.75 L solution. Determine the molarity of the solution.

What is 2.48 M?

300

How many moles of ammonium nitrate are in 335 mL of 0.425M NH₄NO₃?

What is 0.142 mol?

400

You have 4.00M KI solution and you want to make 250.0 mL of a 0.760M KI solution. How much water and how much of the concentrated KI solution do you need?

What is 47.5 mL of the concentrated KI solution and 202.5 mL of water?

500

You are going to put 333.9 g of magnesium chloride into 2000. g of acetic acid. Determine the boiling point of the solution. Round the FINAL ANSWER to the nearest degree.

[You will want to use p. 494-495 of your textbook and the normal boiling point of acetic acid is 118^oC.]

What is 116^oC?