Featured in PASCO’s College Chemistry Instructor Guide

College Chemistry Instructor Guide

(PS-3803A)

College Instructor edition with 36 experiments covering introductory and general chemistry topics.

Organic Synthesis Analysis

Lab Summary

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.

Theory

Organic Synthesis II: Students analyze the purity of the aspirin they synthesized.

Method

Students gain experience conducting the following procedures:

  • Performing qualitative and quantitative analytical methods to determine the composition of their synthesized product, including melting point determination and titration.

Sensors / Equipment Used:

PASPORT Chemistry Sensor

(PS-2170)

Allows students to measure Temperature, pH/ISE/ORP, Absolute Pressure & Voltage in one sensor. For use with PASPORT Interfaces.

PASPORT High Accuracy Drop Counter

(PS-2117)

Is a professional drop counter that allows students to capture detailed titration data. For use with PASPORT Interfaces.

Materials Used:

Micro stir bar
Ring stand 
Clamp, utility 
Clamp, right-angle 
Clamp, buret 
Beaker, 150-mL - 2
Beaker, 100-mL 
Beaker, 25-mL - 2
Test tubes, 15-mL - 3
Melting point capillary tube 
Buret, 50-mL 
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 
Aspirin tablet 
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

The Associated Bundle:

Advanced Chemistry Standard Sensor Bundle

(PS-2928A)

Contains the probeware for completing experiments in the College Chemistry lab manual.

Interface Required

This experiment may require software and an interface for data collection.