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 molar concentration of a strong acid solution by titrating measured volumes with a strong base of known concentration.
Students determine the molar concentration of a strong acid solution by titrating measured volumes with a strong base of known concentration.
Note: Use the sodium hydroxide solution students determined the concentration of in the “Standardizing a Solution of Sodium Hydroxide” activity.
Students gain experience conducting the following procedures:
Micro stir bar
Graduated pipet, 25-mL
Beaker, 100-mL -2
Beaker, 25-mL - 2
Parafilm® or aluminum foil
Hydrochloric acid, unknown concentration - 70 mL
Sodium hydroxide (NaOH), standardized by students in previous activity - 100 mL
Buffers, pH 4 and pH 10 - 10 mL
Deionized water - 100 mL
Wash bottle with deionized water
Cotton swab or tissue
This experiment may require software and an interface for data collection.