Chloro Complexes of Cobalt (II)
Chromate – Dichromate Equilibrium
Oxidation of Chloride Ion by Permanganate
Precipitates and Complexes of Iron (III)
Precipitates and Complexes of Nickel (II)
Bromo Complexes of Copper (II)
Precipitates and Complexes of Copper (II)
Precipitates and Complexes of Silver (I)
Ignition of Hydrogen on a Platinum Catalyst
Geiger Counter and Alpha, Beta, and Gamma Sources
Extraction of Copper Ions from Solution With Orform®
Bromo Complexes of Copper (II)
Description: Concentrated hydrobromic acid is added to copper (II) sulfate solution in small increments. Color changes indicating successive replacement of water by bromide in the hexa-aquo copper ion are observed.
Source: Shakhashiri, B.Z. Chemical Demonstrations: A Handbook for Teachers of Chemistry
Year: 1983 Vol: 1 Page: 314
Keywords: Coordination, Copper (II), Bromide Ion, Complexation
Rating: 
Hazard: Some
- Toxicity hazard
- Aquatic toxicity hazard
- Skin corrosion hazard
- Aspiration hazard
- Serious eye damage hazard
Effectiveness: Average
- Good connection from demo to course material
- Mild effects are seen by audience
- Results are observable without guidance
- Time to results is high
Difficulty: Medium
- Some intermediate steps to results
- Volume-dependent additions for proper results
- Use of reactive substances
Safety Precautions:
- Eye protection required
- Gloves required
- Perform in a well-ventilated
- Absorbent material on hand
- Sodium bicarbonate on hand
- Prevent release of reagents to the environment
Class: Transition Metals, Coordination Compounds
Division: General, Inorganic Chemistry
Return to Inorganic Chemistry Demonstrations