Which solution will have the lowest pH (most acidic)? a. 0.10 M HCIO. b. 0.10 М НСIO с. 0.10 МКОН d. 0.10 M CH:NH:

Chemistry by OpenStax (2015-05-04)
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Author:Klaus Theopold, Richard H Langley, Paul Flowers, William R. Robinson, Mark Blaser
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Chapter14: Acid-base Equilibria
Section: Chapter Questions
Problem 80E: Novocaine, C13H21O2N2Cl, is the salt of the base procaine and hydrochloric acid. The ionization...
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1. Which solution will have the lowest pH (most acidic)?
a 0.10 M HC10.
b. 0.10 M HCIO
с. 0.10 МКОН
d. 0.10 M CH:NH:
2. What is the pH of a 0.03 M weak acid solution? The K. of the said acid is 5.0 x 10. Note:
Do not use an assumption as the Ka is not negligibly small.
a. 1.5
b. 2.0
с. 1.8
d. 2.3
3. What is the [OH] of a solution with pH=4.33? Hint: Solve first for pOH.
a. 2.1 x 10*
b. 2.1х 10-0
c. 4.7 x 10°
d. 4.7 x 10
4. A base has % ionization of 0.3%. What is the pH of 0.05 M solution of the base? Note: Use
the formula for the % ionization of a base.
a 1.3
b. 3.8
с. 10.2
d. 12.7
Transcribed Image Text:1. Which solution will have the lowest pH (most acidic)? a 0.10 M HC10. b. 0.10 M HCIO с. 0.10 МКОН d. 0.10 M CH:NH: 2. What is the pH of a 0.03 M weak acid solution? The K. of the said acid is 5.0 x 10. Note: Do not use an assumption as the Ka is not negligibly small. a. 1.5 b. 2.0 с. 1.8 d. 2.3 3. What is the [OH] of a solution with pH=4.33? Hint: Solve first for pOH. a. 2.1 x 10* b. 2.1х 10-0 c. 4.7 x 10° d. 4.7 x 10 4. A base has % ionization of 0.3%. What is the pH of 0.05 M solution of the base? Note: Use the formula for the % ionization of a base. a 1.3 b. 3.8 с. 10.2 d. 12.7
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