Could you please show me in detail how to do this?
1. Choose an appropriate weak acid from the list below to make 0.25 liter of a 0.1M buffer solution that has a pH of 4.7:
AVAILABLE WEAK ACIDS:
Acetic acid (Ka = 1.8 x 10⁻⁵)
Citric acid (Ka = 8.4 x 10⁻⁴)
Benzoic acid (Ka = 6.4 x 10⁻⁵)
Use the Henderson-Hasselbalch equation and insert values of pH = 7.4 and the Ka of your selected acid.
Why did you choose this acid?© BrainMass Inc. brainmass.com March 4, 2021, 9:55 pm ad1c9bdddf
This solution explains how to choose the correct weak acid to make a buffer solution.