Equilibrium of Chemical Systems- Voltaic Cells

Voltaic Cells

Description: Various half-cells such as silver/silver ion, copper/copper ion, etc. are prepared, connected with a salt bridge. The voltage developed is displayed to the students.

Source: UW Card Catalog

Year: N/A   Vol: N/A   Page: N/A

Keywords: Half-cells, Silver ions, Copper

Rating:

Hazard: Medium

• Acute toxicity hazard – oral, inhalation
• Aquatic toxicity hazard
• Skin sensitization
• Respiratory sensitization
• Reproductive toxicity
• Germ cell mutagenicity hazard
• Electric shock hazard
• Carcinogenicity hazard – inhalation
• Skin corrosion hazard

Effectiveness: Good

• Good connection from demo to course material
• Low failure rate
• Mild effects are seen by audience
• Time to results is low
• Secondary effects noted
• Observable with guidance

Difficulty: Medium

• Some concerted or timed manipulations
• Experiments in which data is recorded or displayed
• Procedures with some intermediate steps to results
• Polarity-dependent manipulations

Safety Precautions:

• Eye protection required
• Gloves required
• Use of UL approved three-prong plug and outlet
• Absorbent materials on hand
• Avoid exposure to mists, gases or vapors
• Prevent release of reagents to the environment

Class: Electrochemistry,  Redox Reactions, Voltaic Cell

Division: General, Analytical Chemistry, Inorganic Chemistry, Physical Chemistry

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