HW 6D. 9

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Michael Du 1E
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Joined: Sun Sep 22, 2019 12:16 am

HW 6D. 9

Postby Michael Du 1E » Tue Jan 21, 2020 9:00 pm

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?"

Ronak Naik
Posts: 103
Joined: Sat Jul 20, 2019 12:15 am

Re: HW 6D. 9

Postby Ronak Naik » Tue Jan 21, 2020 9:08 pm

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.

Brooke Yasuda 2J
Posts: 102
Joined: Sat Jul 20, 2019 12:17 am

Re: HW 6D. 9

Postby Brooke Yasuda 2J » Tue Jan 21, 2020 9:14 pm

From this language you can infer that the concentration given is the initial concentration, and 2.4% of this initial concentration deprotonates.

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