Featured in PASCO’s College Chemistry Instructor Guide
College Instructor edition with 36 experiments covering introductory and general chemistry topics.
Use a stainless steel temperature sensor, pH sensor, and drop counter to perform qualitative and quantitative analytical methods, including melting point determination and titration, to analyze the purity of the aspirin synthesized in Lab 22a.
Organic Synthesis II: Students analyze the purity of the aspirin they synthesized.
Students gain experience conducting the following procedures:
Micro stir bar
Beaker, 150-mL - 2
Beaker, 25-mL - 2
Test tubes, 15-mL - 3
Melting point capillary tube
Graduated cylinder, 100-mL
Magnetic stirrer and stir bar
Hot plate with magnetic stirrer and stir bar
Mortar and pestle
Product from Organic Synthesis I activity
Ethanol - 15 mL
0.1 M Sodium hydroxide (NaOH) - 75 mL
1% Iron chloride (FeCl3) - 2 mL
Mineral oil - 150 mL
Buffers, pH 4 and pH 10 - 10 mL
Water, distilled - 100 mL
Rubber band, small
Wash bottle with deionized water
This experiment may require software and an interface for data collection.