Answer to Question #92440 in Chemistry for Tj

Question

Because rain washes pollutants out of the air, many Ontario lakes are undergoing changes in pH. The water in one such lake was found to have a hydronium ion concentration of 3.2 x 10-5 M. What is the pH of this lake? Is it considered acidic or basic?

Answer 1

Because rain washes pollutants out of the air, many Ontario lakes are undergoing changes in pH. The water in one such lake was found to have a hydronium ion concentration of 3.2 x 10-5 M. What is the pH of this lake? Is it considered acidic or basic?

Solution.

pH = -lg[H₃O⁺] = 4.49 ≈ 4.5

Answer. pH = 4.5, acidic