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 acidity constants of two isomeric multi-protic acids and relate the acidity constants to their structural differences.
Students determine the acidity constants of two isomeric multi-protic acids, use these values to identify the acids, and provide an explanation for the difference in values based on molecular force considerations.
Students will gain experience conducting the following procedures:
Micro stir bar
Beaker, 250-mL - 2
Beaker, 25-mL - 2
Buret , 50-mL
Graduated cylinder, 100-mL
Unidentified fumaric acid solution - 50 mL
Unidentified maleic acid solution - 50 mL
0.500 M Sodium hydroxide (NaOH) - 150 mL
Buffers, pH 4 and pH 10 - 10 mL
Wash bottle with deionized water
Cotton swab or tissue
This experiment may require software and an interface for data collection.