AP CHEMISTRY
Week 2 Problem Set
Solution
, AP CHEMISTRY WEEK 2
Problem Set Solution
Problem Set
Multiple Choice Questions
Question 1: Of the following diagrams, which best represents the structure of solid KF?
A) III and IV
B) I, II, III
C) II only
D) III only
Answer: C II only. Ionic compounds form an alternating lattice where positve charges
attract negative, vice versa.
Question 2: Which of the following can be inferred from the diagram below that shows
the dependence of potential energy on the internuclear distance between two atoms?
A) The atoms form a bond with a bond length of 25 pm.
B) The atoms form a bond with a bond length of 75 pm.
C) The net force between the atoms is attractive at 25 pm.
D) The net force between the atoms is attractive at 75 pm.
Answer: B, bond forming is a stable process and at 75pm the lowest energy is observed.
For option A, at 25pm the highest potential energy; therefore, bonds would not form at
02
Week 2 Problem Set
Solution
, AP CHEMISTRY WEEK 2
Problem Set Solution
Problem Set
Multiple Choice Questions
Question 1: Of the following diagrams, which best represents the structure of solid KF?
A) III and IV
B) I, II, III
C) II only
D) III only
Answer: C II only. Ionic compounds form an alternating lattice where positve charges
attract negative, vice versa.
Question 2: Which of the following can be inferred from the diagram below that shows
the dependence of potential energy on the internuclear distance between two atoms?
A) The atoms form a bond with a bond length of 25 pm.
B) The atoms form a bond with a bond length of 75 pm.
C) The net force between the atoms is attractive at 25 pm.
D) The net force between the atoms is attractive at 75 pm.
Answer: B, bond forming is a stable process and at 75pm the lowest energy is observed.
For option A, at 25pm the highest potential energy; therefore, bonds would not form at
02
