Practice Weak Acids (7.2.2) - Chapter 8: Acids and Base

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6 sample questions

Question 1.
Define a weak acid.
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Think about how strong acids behave compared to weak acids.
Question 2.
What is Ka?
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It starts with 'K' and relates to acid strength.
3Question 3.
What characterizes a weak acid?
- Fully dissociates in solution
- Partially dissociates in solution
- Does not dissociate
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Consider how much of the acid is ionized.
4Question 4.
True or False: A smaller Ka value indicates a stronger acid.
- True
- False
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Think about how strong acids behave.
Question 5.
You are given a weak acid with a Ka of 4.7 x 10^-4. Calculate the pH of a 0.1 M solution of this acid.
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Set up the equilibrium expression carefully.
Question 6.
If the pKa of a weak acid is 5, what would be the Ka?
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Think logarithmically about the inverse relationship.

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