
February 14
Authored by Kira Evans
Chemistry
University

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11 questions
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1.
MULTIPLE CHOICE QUESTION
45 sec • 1 pt
A very dilute solution of a weak acid has a concentration of 1.3x10-4 M, the Ka of the weak acid is 1.0x10-18. What is the pKa of the weak acid?
pKa = -log(Ka)
18.0
18
18.00
18.000
2.
MULTIPLE CHOICE QUESTION
5 mins • 2 pts
A very dilute solution of a weak acid has a concentration of 1.3x10-4 M, the Ka of the weak acid is 1.0x10-18. What is the [H+] of the solution?
Hint: The H+ concentration of water in 1.0x10-7. Does your answer make sense for an acidic solution?
1.000114x10-7
1.3x10-4
1.14018x10-11
1.3x10-22
3.
OPEN ENDED QUESTION
1 min • 1 pt
What does that make the pH?
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4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is the H+ concentration of a 0.81 M solution of H2SO4?
0.13 M
1.3 M
1.0 M
0.0 M
5.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
What is the pH of a 0.81 M solution of H2SO4?
9.7
9.69
9.15
9.2
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Does a reaction's equilibrium favor strong or weak acids?
Strong
Weak
7.
OPEN ENDED QUESTION
3 mins • 1 pt
Why does a reaction favor the weak acid/base?
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