Biochemistry 4th Edition by Christopher Mathews,Kensal van Holde, Dean Appling, Spencer Anthony Cahill

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In this and following chapter's, more difficult problems are indicated by an asterisk.
What is the pH of each of the following solutions
(a) 0.35 M hydrochloric acid
(b) 0.35 ivi acetic acid
(c) 0.035 M acetic acid
[Note that the approximate method used in EquatioN₂.15 will not give a good answer at low A 0. ]