Pre-IB & Pre-AP Chemistry
PLEASE DO NOT WRITE ON THE EXAM
4TH 9 WEEKS-3 WEEK EXAM
Pre-IB & Pre-AP Chemistry
8.
9.
PLEASE DO NOT WRITE ON THE EXAM
4TH 9 WEEKS-3 WEEK EXAM
11.
12.
13.
10.
14.
In this apparatus, the seawater is an
example of a —
A strong electrolyte
B weak acid
C nonelectrolyte
D strong base
Pre-IB & Pre-AP Chemistry
PLEASE DO NOT WRITE ON THE EXAM
17.
15. Dissolving salt in water increases the
conductivity of the solution because the —
A. salt gives the solution a net negative charge
B. salt ions bond with the available water
molecules
C. solution has an increase in kinetic energy
D. concentration of ions in the solution
increases
16. The table shows data from an investigation
designed to find a liquid solution that is both an
acid and a strong electrolyte. Based on the data,
a solution that is both an acid and a strong
electrolyte is —
18.
19.
A Solution 1
B Solution 2
C Solution 3
D Solution 4
20.
4TH 9 WEEKS-3 WEEK EXAM
Pre-IB & Pre-AP Chemistry
PLEASE DO NOT WRITE ON THE EXAM
4TH 9 WEEKS-3 WEEK EXAM
Solve the following problems (make sure you show your work, use correct units and use
correct number of sig. figs. to receive credit):
21. Calculate the pOH of a solution containing a concentration [H+] = 1.0 x 10-9 M.
22. What is the pH of a solution containing a concentration of [OH-] = 5.62 x 10-11 M?
23. If a solution has a concentration of [H+] = 2.82 x 10-9 M, what is the concentration of [OH-]
ions?
24. Nitric acid (HNO3) is a strong acid.
If you have a solution of HNO3 with a concentration of
0.0035 M, what would be the pH of this solution?
25. NaOH is a strong base.
If you have a solution of NaOH with a concentration of 0.25 M,
what would the pH of the solution be?
EXTRA CREDIT (5 pts. each)
For question A, write the complete neutralization reaction (write the equation using chemical
formulas for both the reactants and products and don’t forget to balance it!!):
A. calcium hydroxide and hydrogen oxalate acid 
For question B, show your work and use correct number of sig. figs.:
B. What is the pH of LiOH if you have 0.15 moles in 0.25 L?