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9. Polyprotic Acid-Base Equilibria - Part 2 of 2

9. Polyprotic Acid-Base Equilibria / Principal Species / Problem 2

Problem 2

What is the principal species in a solution of acetic acid (pK_a = 4.76) at pH 3?

A

Acetic acid (CH₃COOH)

B

Acetate ion (CH₃COO^-)

C

Water (H₂O)

D

Hydronium ion (H₃O⁺)