Question

Prepare dilute acid and base solutions and buffered acid and base solutions to observe how buffering affects the pH. Use four clean, dry 50 ml beakers. Put these pH measurments in the Data Sheet Dilute NaOH Beaker 3 1. add 25 mL distilled H2O Buffered NaOH Beaker 4 1. add 25 mL of original buffer solution Dilute HCI Buffered HCI Beaker 1 Beaker 2 1. add 25 mL distilled 1. add 25 mL of H2O original buffer solution 2. Measure pH, 2. measure pH, record as pH of record as pH of distilled water original buffer solution 3. using a plastic 3. using a plastic pipet, add.5ml of pipet, add.5ml of 6M HCl, mix 6M HCI, mix thoroughly thoroughly 4. measure pH, 4. measure PH, record as pH of record as pH of distilled water with buffer with 6M HCI added 6M HCI 2. using a plastic, add.5mls of 6M NaOH, mix thoroughly 3. measure pH, record as distilled water with 6M NaOH 2. using a plastic pipet, add.5ml of 6M NaOH, mix thoroughly 3. measure pH, record pH of buffer solution with 6M NaOH Calculation guide: .5ml of 6M HCl is diluted to 25.5ml total volume Calculation guide: .5ml of 6M NAOH is diluted to 25.5ml total volume You need to apply LeChatelier's Principle (stress of additional HCI) to calculate the resulting pH change to the original buffer due to the small amount of HCI added You need to apply LeChatelier's Principle (stress of additional NaOH) to calculate the resulting pH change to the original buffer due to the small amount of NaOH added You need to determine the diluted HCI M to calculate the resulting pH You need to determine the diluted NaOHM to calculate the resulting pH