Exploring AP Chemistry Concepts: Review Session #2

What is encouraged to use during the free response section of the AP Chemistry exam?

• A scientific calculator only

• A periodic table and an equation sheet

• Collaboration with peers after the exam

• Internet resources for quick lookup

According to VSEPR theory, what is the bond angle in a trigonal planar molecule?

• 90 degrees

• 109.5 degrees

• 180 degrees

• 120 degrees

Which intermolecular force is present in all molecules?

• Ionic bonding

• London dispersion forces

• Dipole-dipole interactions

• Hydrogen bonding

What determines the order of a reaction in kinetics?

• The activation energy of the reaction

• The slope of the concentration vs. time graph

• The concentration of reactants only

• The change in enthalpy

What is the primary factor that affects the rate constant (k) of a reaction?

• Temperature

• Concentration of reactants

• Presence of a catalyst

• Volume of the reaction mixture

In a dilution calculation, what formula is used to find the volume of the stock solution required?

• M1V1 = M2V2

• K = [Products]/[Reactants]

• PV = nRT

• C1V1 = C2V2

What happens to the concentration of a solution if the volumetric flask is overfilled beyond the mark?

• The concentration remains unchanged

• The concentration decreases

• The solution becomes supersaturated

• The concentration increases

What is the charge of an ion that shows a large increase in ionization energy after removing one electron?

• +1

• 0

• -1

• +2

What is the correct formula for a compound formed between an element with a +1 charge and iodine?

• M3I

• MI2

• M2I

• MI

What is the role of Faraday's constant in electrochemistry problems?

• It measures the electrical conductivity of a solution

• It determines the pH of the solution

• It is used to calculate the flow of electrons

• It indicates the concentration of ions in solution