ner From the procedure 4. For this experiment, define the buffer capacity of a solution as the number of mL of either 3.

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ner From the procedure 4. For this experiment, define the buffer capacity of a solution as the number of mL of either 3.0 M HCl or 3.0 M NaOH added before the pH of the solution changes by more. than 1 pH unit from the initial pH measurement a. If the pH of a buffer solution changes by more than 1 pH unit during the first addition of HCL, then that buffer solution's acid buffer capacity is "0.0 ml" or "unable to buffer in other words, if the pH changes by more than 1 pH unit after adding the first addition, then that first addition is said to have "exceeded the buffer capacity b. If the pH of a buffer solution changes by more than 1 pH unit during the second 10 drop addition of NaOH (changed by >1 between 1.0 mL and 2.0 ml) then that buffer solutions base buffer capacity is 1.0 mL." c. If after 3.0 ml, the pH of a buffer solution does not change by more than 1 pH unit from initial, then the "buffer capacity was not exceeded". In other words, it would take more than 3.0 mL to exceed the buffer capacity. 5. Compare the acid and base buffer capacities to the concentrations of acid and base in the buffer solutions in Report Table BU.3. Review your data for any trends or patterns between buffer capacities and concentrations you may observe Report Table BU.5a: Buffer capacities when adding acid Table view List view Buffer capacities in ml. of acid Initial 1.0 mL Acid 2.0 mL 3.0 mL Buffer capactity Cho Choose... Beaker #1 2:56 1.34 1.34 1.34 Ch Choose Beaker #2 2.94 1.88 1.99 188 Choose Choose Beaker #31 4.38 3.85 1.78 DICH Beaker 94 4.73 4.30 3.69 369 Choose Choose Beaker #5 5.18 4.22 365 Choose Ch Choose Beaker #6 5.12 5:12 $ 4.69 5.12
Buffer capacities in mo Becker #1 Beaker 12 Deaker #3 Beker #4 Beaker 2.50 3.90 449 512 7.40 10ml 1.50 418 6.56 12.70 20 mL 3.50 475 557 6.47 12.30 S 30 mL D Choose 1.50 Cas 5.28 157 Choose Ch Choose 6.47 Chan Choose 6.56 Choose 12.30 Base Buffer capacity
55 12 Choose... Choose... Choose... 0.0 mL (Unable to buffer) 1.0 mL acid 2.0 mL acid Buffer capacity was not reached