J.R. S. answered • 02/24/21
Ph.D. University Professor with 10+ years Tutoring Experience
The pKa is not for the buffer, but rather for the weak acid that is part of the buffer. In the current problem, you have the weak acid C2H2O4 (oxalic acid). The pKa1 for oxalic acid is 1.23.
As far as I can tell, that's really all there is to solving this problem.
Saqibul C. answered • 02/24/21
General Chemistry Tutor with 3 years of experience
It is not possible to answer this question without any units and we also need to know at least 2 of the 3 criteria: concentration, volume and number of moles.
Elle B.
Oops! I forgot to add M to 0.20 and 0.35 ... I am a bit confused because this is all the information the problem gave?02/24/21
Saqibul C.
Yeah. I thought the question was asking for pH value. It's actually just asking for the pKa value for which you only need to look at a pKa value table.02/24/21
Get a free answer to a quick problem.
Most questions answered within 4 hours.
Choose an expert and meet online. No packages or subscriptions, pay only for the time you need.
Answers · 3
Answers · 9
Answers · 2
Answers · 3
Answers · 8
Bri H.
5.0 (232)
Melissa H.
5.0 (234)
Catherine G.
4.9 (1,346)
Saqibul C.
You are correct. I misread the question and interpreted it to be much harder than it actually was.02/24/21