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16 Nov 2019
Please answer questions 2 and 3 explain and show all work. ASAP thank you! a.) What pH would provide maximum buffer capagity? b) what would be the buffer range for this acid? (Your answer should show the lowest and the highest pH that would provide a reasonably effective buffer.) 2. If you were provided with a 0.1 M solution of an unknown weak acid and a 0.1 M solution of its conjugate base, what procedure would you follow to determine the pKa? 3. Nitrous acid, HNOz, has a Ka 4.5 x 10-1. You are asked to prepare a buffer having a pH of 3.60 using the following solutions: 0.10 M HNO2 and 0.10 M NaNO2. How many milliliters of NaNO2 solution should you add to 20.0 mL of 0.10 M HNO2 to make the buffer? 4. What is the ratio of acetate ion to acetic acid in a buffer containing these compounds at pH 3.56 The pKa of acetic acid is 4.75. laia
Please answer questions 2 and 3 explain and show all work. ASAP thank you!
a.) What pH would provide maximum buffer capagity? b) what would be the buffer range for this acid? (Your answer should show the lowest and the highest pH that would provide a reasonably effective buffer.) 2. If you were provided with a 0.1 M solution of an unknown weak acid and a 0.1 M solution of its conjugate base, what procedure would you follow to determine the pKa? 3. Nitrous acid, HNOz, has a Ka 4.5 x 10-1. You are asked to prepare a buffer having a pH of 3.60 using the following solutions: 0.10 M HNO2 and 0.10 M NaNO2. How many milliliters of NaNO2 solution should you add to 20.0 mL of 0.10 M HNO2 to make the buffer? 4. What is the ratio of acetate ion to acetic acid in a buffer containing these compounds at pH 3.56 The pKa of acetic acid is 4.75. laia
Casey DurganLv2
22 May 2019