Unformatted text preview: p H 9 buffer. The buffer should have the largest buffering capacity (highest concentration) possible given the reagents available. [10 marks] (b) Suppose that 5 mL of 0.20 mol/L sodium hydroxide solution is added to 50 mL of your buffer solution. What is the final p H? Report your answer to two decimal places. [10 marks] 6. 15 mL of a 0.043 mol/L solution of sodium dihydrogen phosphate is mixed with 25 mL of a 0.54 mol/L solu-tion of sodium hydrogen carbonate. What are the final concentrations of the major species in this mixture? [10 marks] Notes and hints: By “major species”, I mean any species whose concentrations are of a similar order of magni-tude to the reagents. Your first task will be to determine the reaction which might occur in this mixture. There’s a dilution involved here, so be a little careful when setting up your calculations....
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This note was uploaded on 03/03/2012 for the course CHEM 2000 taught by Professor Roussel during the Fall '06 term at Lethbridge College.
- Fall '06