Practice Calculating Ph For Weak Acids And Weak Bases (2.3)

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6 sample questions

Question 1.
What is the difference between a weak acid and a strong acid?
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Think about what happens when each is mixed with water.
Question 2.
Given a weak acid with Ka = 1.0 x 10⁻⁷ and C₀ = 0.1 M, find x.
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Use the approximation for weak acids.
3Question 3.
What does the term Ka represent?
- Base dissociation constant
- Acid dissociation constant
- Equilibrium constant
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Think about its relationship to weak acid behavior.
4Question 4.
True or False: Weak acids fully dissociate in water.
- True
- False
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Consider how strong acids behave.
Question 5.
Given a 0.15 M formic acid solution with a Ka of 1.8 x 10⁻⁴, calculate the pH.
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Bear in mind the approximation principles we've discussed.
Question 6.
If we have a weak base solution of sodium bicarbonate at 0.1 M, find the pH knowing Kb is 2.3 x 10⁻⁸.
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Remember to apply Kb for weak bases similarly to Ka for weak acids.

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