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HW 6D. 9

Posted: Tue Jan 21, 2020 9:00 pm
by Michael Du 1E
How do we know if the given concentration of benzoic acid (0.110 M) is either the equilibrium concentration of initial concentration? Thank you!

Problem: "The percentage deprotonation of benzoic acid in a 0.110 M solution is 2.4%. What is the pH of the solution and the Ka of benzoic acid?"

Re: HW 6D. 9

Posted: Tue Jan 21, 2020 9:08 pm
by Ronak Naik
If the problem says a certain molarity of an acidic or basic solution it is referring to its initial concentration. If it was the equilibrium concentration, it would have definitely specified.

Re: HW 6D. 9

Posted: Tue Jan 21, 2020 9:14 pm
by Brooke Yasuda 2J
From this language you can infer that the concentration given is the initial concentration, and 2.4% of this initial concentration deprotonates.