9. 0.4288 g of an unknown acid is dissolved in 20.00 mL water and titrated with NaOH, resulting in the following titration curve. 12 10 8 10 12 14 16 18 20 € 8 6 4 2- 2 4 6 Volume 0.1750 M NaOH (mL) a. Calculate the molar mass of the unknown acid. b. Is the unknown acid strong or weak? How do you know? c. Calculate the pH of a 1.75 M solution of the unknown acid. Answer: Answer:

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Chapter16: Acid-base Equilibria
Section: Chapter Questions
Problem 16.118QP: A 0.239-g sample of unknown organic base is dissolved in water and titrated with a 0.135 M...
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Question 9

9. 0.4288 g of an unknown acid is dissolved in 20.00 mL water and titrated with NaOH, resulting in the
following titration curve.
12
10
8
K
6
4
2
2
4
6 8 10
12 14
16 18 20
Volume 0.1750 M NaOH (mL)
a. Calculate the molar mass of the unknown acid.
b. Is the unknown acid strong or weak? How do you know?
c. Calculate the pH of a 1.75 M solution of the unknown acid.
Answer:
Answer:
Transcribed Image Text:9. 0.4288 g of an unknown acid is dissolved in 20.00 mL water and titrated with NaOH, resulting in the following titration curve. 12 10 8 K 6 4 2 2 4 6 8 10 12 14 16 18 20 Volume 0.1750 M NaOH (mL) a. Calculate the molar mass of the unknown acid. b. Is the unknown acid strong or weak? How do you know? c. Calculate the pH of a 1.75 M solution of the unknown acid. Answer: Answer:
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