Chloro Complexes of Cobalt (II)
Precipitates and Complexes of Nickel (II)
Precipitates and Complexes of Silver (I)
Spectroscopy in Large Lecture Hall II
Bromo Complexes of Copper (II)
Colorful Complexes Ions in Ammonia
Colors of Complexes of Transition Metal
Iron (III) Thiocyanate Complex Ion Equilibrium
Precipitates and Complexes of Copper (II)
Precipitates and Complexes of Iron (II)
Relationship of Absorbed Light to Observed Color
Reduction of Permanganate Ion by Sulfide Ion
Spectroscopy in Large Lecture Hall II
Description: Half-filled containers of colored solutions are placed in front of a white light. The light is viewed through a diffraction grating. The absorption spectra of the colored light can be seen and compared to the spectra of white light.
Source: Journal of Chemical Education
Year: 1988 Vol: 65 Page: 1006
Keywords: White light, Diffraction grating, Diffraction, Spectrum, Absorption
Rating: 
Hazard: Low
- Electrical shock hazard
- Breakage hazard
- Aquatic toxicity hazard
- Acute toxicity hazard
Effectiveness: Good
- Results are observable with guidance
- Good connection from demo to course material
- Good reliability
- Moderate failure rate
- Time to results is low
- Mild effects are seen by audience
Difficulty: Medium
- Accurate alignment required
- Demos in which objects are passed out to students
- Simple procedures
- Careful handling of lamps required
- Liquid level must be half-full in cuvette
Safety Precautions:
- Use of UL approved three-prong and outlet
- Gloves required when handling lamps
- Absorbent material on hand
- Sodium bicarbonate on hand
- Prevent release of reagents to the environment
- Avoid exposures to droplets and vapors
Class: Atomic Structure, Spectroscopy, Atomic Emission
Division: Analytical Chemistry, General
The demonstration Spectroscopy in Large Lecture Hall II may be found under Atomic Structure- Spectroscopy in Large Lecture Hall.
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