Featured in PASCO’s College Chemistry Instructor Guide
College Instructor edition with 36 experiments covering introductory and general chemistry topics.
Use a pH sensor and drop counter to determine the equilibrium constant for the ionization of a weak acid to ascertain the identity of the acid.
Students determine the equilibrium constant for the ionization of a weak acid (Ka) to ascertain the identity of the acid.
Students gain experience conducting the following procedures:
Beaker, 100-mL - 2
Graduated cylinder, 100-mL
Magnetic stirrer and stir bar
0.20 M Sodium hydroxide (NaOH) - 75 mL
Unknown weak acid solution (use acetic acid) - 50 mL
Buffer solutions, pH 4 and pH 10 - 10 mL
This experiment may require software and an interface for data collection.