1. What are [H3O+] and [OH-] in solutions with the following pH? (a) pH = 2.85 (b) pH = 9.40 2. A 0.020 M solution of ni

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1 What Are H3o And Oh In Solutions With The Following Ph A Ph 2 85 B Ph 9 40 2 A 0 020 M Solution Of Ni 1 (96.68 KiB) Viewed 30 times

1. What are [H3O+] and [OH-] in solutions with the following pH? (a) pH = 2.85 (b) pH = 9.40 2. A 0.020 M solution of niacin, one of the B vitamins, has a pH of 3.26. What is the acid-dissociation constant, Ka, for niacin? ([H3O+] = 5.5 × 10-4) niacin + H₂O niacin¯ + H3O+ 2. What is the pH of a 0.010 M solution of niacin? 3. Calculate the pH of a 0.25 M solution of KCN. (K CN- = 2.04 × 10-5)