PLS!!! 8). Order the following weak acids from least to greatest acid strength:

Question

PLS!!!
8). Order the following weak acids from least to greatest acid strength: Sulfanilic acid. Imidazole. Propanoic acid
9). Which of the acids in problem 8 is best to prepare a buffer solution with a pH of 6.5? Explain
10). Calculate the pH of a buffer solution which has a pka of 2.30 if the concentrations of conjugate base and acid are equal.
Please help with all of these. I have been asking chegg tutors for two days now to help with these three problems ! Thanks in advance Zind the pH and fraction of association for 1.00X30 M sodium acetate B.Ordes the following wweak acids from least to greatest acid strength Sultani acid propenoic aod Which of the acids in problem &is; best to prepare a buffer solution with a ph of 6.57 Ein lesenete the pH of·butter solution which has Need help with problems 7-10. Please explain each answer thanks

Explanation / Answer

8. The correct order is Imidazole(pka about 6.5) < Propanic acid(pka about 4.87) < Sulfanilic acid (pka about 3.25).

As value of pka decreases , acidic strength increases.

9. Imidazole

10. Since the concentrations are equal , by Henderson equation we have

pH=pka + log(1) =pka=2.30

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