Question

Part A) Calculate the pH of the buffer that results from mixing 56.3 mL of a 0.453 M solution of HCHO2 and 16.1 mL of a 0.511 M solution of NaCHO2. The Ka value for HCHO2 is 1.8×10^(-4). Part B) 300.0 mL of a buffer solution that is 0.200 M in HCHO2 and 0.305 M in KCHO2. Calculate the initial pH and the final pH after adding 0.005 mol of NaOH.

Name: part a calculate the ph of the buffer that results from mixing 563 ml of a 0453 m solution of hcho2 and 161 ml of a 0511 m solution of nacho2 the ka value for hcho2 is 18104 part b3000 ml of 18185
Uploaded: 2023-07-21T02:17:58-08:00
Duration: 2 min 44 s
Channel: Dominique Jan Tan
Description: part a calculate the ph of the buffer that results from mixing 563 ml of a 0453 m solution of hcho2 and 161 ml of a 0511 m solution of nacho2 the ka value for hcho2 is 18104 part b3000 ml of 18185

          Part A) Calculate the pH of the buffer that results from mixing 56.3 mL of a 0.453 M solution of HCHO2 and 16.1 mL of a 0.511 M solution of NaCHO2. The Ka value for HCHO2 is 1.8×10^(-4).
Part B) 300.0 mL of a buffer solution that is 0.200 M in HCHO2 and 0.305 M in KCHO2. Calculate the initial pH and the final pH after adding 0.005 mol of NaOH.

Added by Amber P.

Chemistry: Structure and Properties

Nivaldo Tro 2nd Edition

Instant Answer

Solved by Expert Dominique Jan Tan

07/21/2023

Step 1

Calculate the moles of HCHO2 and NaCHO2 in the solution. moles of HCHO2 = 0.453 M * 0.0563 L = 0.0255 mol moles of NaCHO2 = 0.511 M * 0.0161 L = 0.00823 mol Show more…

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Part A) Calculate the pH of the buffer that results from mixing 56.3 mL of a 0.453 M solution of HCHO2 and 16.1 mL of a 0.511 M solution of NaCHO2. The Ka value for HCHO2 is 1.8×10^(-4). Part B) 300.0 mL of a buffer solution that is 0.200 M in HCHO2 and 0.305 M in KCHO2. Calculate the initial pH and the final pH after adding 0.005 mol of NaOH.