There are so many errors like that in premade decks. Make your own!
I only used Anki for P/S because that's the one section where recall matters. For C/P and B/B you are much better off doing questions and reading through answer explanations (if they're good) than you are memorizing flash card facts.
Between chemistry and biochemistry I must have done fifty to 100 questions comparing pH to pKa from every possible angle they could ask it. Both times taking the MCAT made me glad I knew how to apply it in context.