Calculate the K a of a weak acid if a 0.023 M solution of the acid has a pH of 3.83 at 25c
Weak acid ionizes as
HA = H+ + A-
Ka = [H+] [A-]/[HA]
pH = 3.83
[H+] = 10-pH
[H+] = 10-3.83
[H+] = 1.48 x 10-4 M
Ka = (1.48 x 10-4)2/0.023
Ka = 9.51 x 10-7
Calculate the K a of a weak acid if a 0.023 M solution of the acid...
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