Polyprotic Acid
- Page ID
- 282817
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CHEM 2300, In-class Exercises, Class 20
Name: _________________________
Phosphoric acid, H3PO4 is a triprotic acid. pKa1= 2.16 pKa2=7.21 pKa3=12.32
- Estimate the pH in a 0.450 M phosphoric acid solution.
- Estimate the pH in a 0.450 M HPO42- solution
- Find the concentrations of the following species in the 0.450 M phosphoric acid solution from Problem 1: H3PO4, H2PO4-
CHEM 2300, In-class Exercises, Class 22
Name: _________________________
Citric acid, C6H8O7, is a triprotic acid. pKa1= 3.128 pKa2=4.761 pKa3=6.396
- Given 25 mL of a 0.1 M solution of citric acid, calculate the pH after the addition of the following amounts of a 0.1 M solution of NaOH.
- 0.00 mL e. 25.0 mL i. 62.5 mL
- 10.0 mL f. 37.5 mL j. 70.0 mL
- 12.5 mL g. 40.0 mL k. 75.0 mL
- 100.0 mL h. 50.0 mL
Contributors and Attributions
- Sarah Gray, Stockton University (sarah.gray@stockton.edu)
- Sourced from the Analytical Sciences Digital Library