PLEASE follow the instructions carefully.

Instructions Your task is to complete the questions in the problem set. Please note that you must include units throughout all of your calculations, and provide your answer in scientific notation to the correct number of significant digits. Questions 1. Identify the acid, its conjugate base, the base, and its conjugate acid in the following reaction: (2 marks) CH3COOH(aq) + H2O(1) CH3COOT + H30 tag) (aq) 2. 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 5.6 x 10-4 M. What is the pH of this lake? Is it considered acidic or basic? (2 marks) 3. The pH of a sample of human blood was measured to be 7.36 at 25C. What is the hydroxide ion (OH) concentration? (3 marks) 4. What is the pH of a sodium hydroxide solution at 25C in which the hydroxide ion concentration is 0.0063 mol/L? Is the solution acidic or basic? (3 marks) 5. A 0.35 M solution of hydrofluoric acid (HF(aq)) has a pH of 3.82 at 25C. Calculate the K, and Percent lonization of hydrofluoric acid. (4 marks) HF (aq) + H2O(1) F Frag) + H30 (aq) + 6. A 30.00 mL sample of 0.423 M nitric acid (HNO3(aq)) is titrated with 15.00 mL of 0.632 M lithium hydroxide (LiOH(aq)). Determine the amount of H307 remaining in the flask and pH of the solution after reaction. (4 marks) (aq)