1. What is the [OH-] concentration of black coffee if it's pH is 5.3?

Chemistry
10th Edition
ISBN:9781305957404
Author:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste
Publisher:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste
Chapter1: Chemical Foundations
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Chemistry
1. What is the [OH-] concentration of black
coffee if it's pH is 5.3?
2. What is the hydrocyanic acid buffer solution
containing 0.25 M hydrocyanic acid (HCN)
and 0.50 M of cyanide ion (CN-)? pka of HCN
9.31
3. Which among the following weak acids is
considered to be the strongest?
a. H2CO3 with Ka=4.37 x 10-7
b. HCO3- with pKa= 1.025
c. CH3COOH with pka = 4.75
d. NH4+ with Ka = 5.6x10-10
Transcribed Image Text:Chemistry 1. What is the [OH-] concentration of black coffee if it's pH is 5.3? 2. What is the hydrocyanic acid buffer solution containing 0.25 M hydrocyanic acid (HCN) and 0.50 M of cyanide ion (CN-)? pka of HCN 9.31 3. Which among the following weak acids is considered to be the strongest? a. H2CO3 with Ka=4.37 x 10-7 b. HCO3- with pKa= 1.025 c. CH3COOH with pka = 4.75 d. NH4+ with Ka = 5.6x10-10
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