CHM100
Fall 2023 Exam #3 Review (units 5-7) Update
Unit 5 Gases and Gas Laws
• know details of and be able to apply the Kinetic Molecular Theory of gases to describe gas
behavior as it relates to each postulate of the theory
• be able to understand the concepts (and apply this knowledge to problems about gas
behavior) and use gas law (should know each law) and be able to use equations to answer
word problems:
Boyle’s Law
Charles’s Law
Gay-Lussac’s Law
Avogadro’s Law
Be able to recognize and manipulate the Ideal Gas Law
• be able to recognize graphical representations of each gas law
• be able to do calculations for molar volumes using STP
• be able to do calculations using Dalton’s Law of Partial pressures
• Know the conversions factors between atm, mmHg, and Torr and be able to do pressure
conversions.
Unit 6 Solutions
• Know what makes up a solution and how to determine what is the solute and solvent
o Difference between ionic vs covalent compound dissolution —hydration vs
dissolving
• Describe the intermolecular forces between solute and solvent molecules
o How do IMFs play a role in solutions?
o Identify solutes that can dissolve in a give solvent
• Know the definition of electrolytes vs non-electrolytes
o Ionic vs molecular compounds
Be able to determine strong vs weak electrolytes based on a balanced
equation (reversible vs non-reversible reactions, i.e. forward and reverse
arrow in reaction)
o Identify electrolytes vs non-electrolytes
• Describe the difference between saturated vs unsaturated solution
o Identify whether a solution is saturated or unsaturated
• How does temp affect the solubility of solutes including solids and gases in liquids and
Henry’s Law (effect of pressure on gaseous solutes)
• Be able to do calculations determining %m/m, %m/v, %v/v and/or how to calculate the
grams or volume of a solute needed to form a solution with a given concentration.
• Be able to do calculations involving Molarity (M)= mol/L
o What is molarity given the mass or moles of solute and volume of solution?
o Be able to use molarity to determine the amount of solute (g or moles) in a
solution if given volume
