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15 Nov 2019
Write a balanced equation that describes the net ionic reaction used to prepare your buffer in Part I. Identify the two components of the solution that enable it to resist changes in pH. PARTI-PREPARING BUFFER SOLUTIONS This experiment is done by students working in groups of three. During Week Two, each group will work with the conjugate base of the weak acid they were assigned to work with during Week One. The conjugate base will be sodium acetate (CH3CO2Na), sodium formate (HCO2Na), or sodium propanoate (CH3CH2CO2Na). Each group will prepare three buffer solutions by mixing their assigned conjugate base with different amounts of HCl, as indicated in Table B TABLE B Buffer mL of 0.50 M weak base mL of 0.25 M HCmL of H2O 50.00 50.00 50.00 50.00 35.00 25.00 0.00 15.00 25.00 1 2 The three buffer solutions used in this experiment are prepared as follows: Obtain three clean, dry 150-mL beakers and label these beakers: Buffer 1, Buffer 2, and Buffer 3. Use a clean, rinsed 100-mL graduated cylinder to add 50.00 mL of the 0.50 M solution of the conjugate base to each of the 150-mL beakers. Use a burette to add the appropriate volume of 0.25 M HCl to each beaker. Use a burette to add the appropriate volume of water to each beaker.
Write a balanced equation that describes the net ionic reaction used to prepare your buffer in Part I. Identify the two components of the solution that enable it to resist changes in pH. PARTI-PREPARING BUFFER SOLUTIONS This experiment is done by students working in groups of three. During Week Two, each group will work with the conjugate base of the weak acid they were assigned to work with during Week One. The conjugate base will be sodium acetate (CH3CO2Na), sodium formate (HCO2Na), or sodium propanoate (CH3CH2CO2Na). Each group will prepare three buffer solutions by mixing their assigned conjugate base with different amounts of HCl, as indicated in Table B TABLE B Buffer mL of 0.50 M weak base mL of 0.25 M HCmL of H2O 50.00 50.00 50.00 50.00 35.00 25.00 0.00 15.00 25.00 1 2 The three buffer solutions used in this experiment are prepared as follows: Obtain three clean, dry 150-mL beakers and label these beakers: Buffer 1, Buffer 2, and Buffer 3. Use a clean, rinsed 100-mL graduated cylinder to add 50.00 mL of the 0.50 M solution of the conjugate base to each of the 150-mL beakers. Use a burette to add the appropriate volume of 0.25 M HCl to each beaker. Use a burette to add the appropriate volume of water to each beaker.
lalithashwin156Lv10
25 Apr 2023
Jean KeelingLv2
9 May 2019
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