1) A 45 mL sample of 0.175 M KOH is titrated with 0.200 M HI. a. Find the initial pH of the 0.175 M KOH solution. b. Find the pH when 18 mL of 0.200 M HI have been added. c. Find the pH when 63 mL of 0.200 M HI have been added.

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Chapter16: Acid-base Equilibria
Section: Chapter Questions
Problem 16.31QP: You are given the following acidbase titration data, where each point on the graph represents the pH...
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1) A 45 mL sample of 0.175 M KOH is titrated with 0.200 M HI.
a.
b.
c.
d.
Find the initial pH of the 0.175 M KOH solution.
Find the pH when 18 mL of 0.200 M HI have been added.
Find the pH when 63 mL of 0.200 M HI have been added.
How many milliliters of 0.200 M HI must be added to reach the
equivalence point?
e.
What is the pH at the equivalence point?
f. Draw a titration curve for this titration.
g.
Which of the following indicators should be used to signal the endpoint of
this titration: methyl red (pK₁ = 5.5), litimus (pK₁ = 7.0), or
phenolphthalein (pK, = 8.7)? Explain.
Transcribed Image Text:1) A 45 mL sample of 0.175 M KOH is titrated with 0.200 M HI. a. b. c. d. Find the initial pH of the 0.175 M KOH solution. Find the pH when 18 mL of 0.200 M HI have been added. Find the pH when 63 mL of 0.200 M HI have been added. How many milliliters of 0.200 M HI must be added to reach the equivalence point? e. What is the pH at the equivalence point? f. Draw a titration curve for this titration. g. Which of the following indicators should be used to signal the endpoint of this titration: methyl red (pK₁ = 5.5), litimus (pK₁ = 7.0), or phenolphthalein (pK, = 8.7)? Explain.
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