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.

Coordination Compound

Lab Summary

Use a stainless steel temperature sensor to help confirm the identity of a sample of alum synthesized in Lab 15a by conducting both qualitative and quantitative analyses.

Theory

Students confirm the identity of a sample of alum by conducting both qualitative and quantitative analyses.

Method

Students gain experience conducting the following procedures:

  • Conducting substance identification tests such as a melting point analysis and a flame test.
  • Performing a stoichiometric analysis, using a crucible and Bunsen burner, to determine the amount of water in a hydrated compound.
  • Conducting qualitative analyses for sulfate and aluminum.

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.

Materials Used:

Ring stand with ring 
Clay triangle 
Clamp, buret 
Clamp, utility 
Crucible with lid 
Tongs 
Test tubes, 10 mL - 2
Beaker, 250-mL
Capillary tube 
Stirring rod 
Watch glass, 100-mm - 2
Balance - 1 per class
Centrifuge - 1 per class
Wire with a loop on the end, 4 in. 
Hot plate 
Bunsen burner 
Striker 
0.2 M Barium chloride (BaCl2) - 1 mL
6 M Sodium hydroxide (NaOH) - 5 mL
6 M Hydrochloric acid (HCl) - 5 mL
Borax - 0.5 g
Alum from previous experiment - 3 g
Rubber band 
Water - 200 mL
Distilled water - 10 mL

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.