Solubility of Benzoic Acid
Description: Benzoic acid is suspended in cold water and stirred. It is then heated, and about 75 C, it dissolves completely. When it is cooled, crystals come out of solution.
Source: UW Card Catalog
Year: N/A Vol: N/A Page: N/A
Keywords: Benzoic acid, Temperature, Crystallization, Solubility
Rating: 
Hazard: Medium
- Acute toxicity hazard – oral, lungs
- Electrical shock hazard
- Burn hazard
- Short term aquatic toxicity hazard
- Serious eye damage
- Inhalation hazard
- Skin irritation
Effectiveness: Average
- Results are observable with guidance
- Mild effects are seen by audience
- Time to results is high
- Somewhat connected to course material
Difficulty: Medium
- Some timed manipulations are required
- Some intermediate steps to results
- Demos in which a display is used
- Temperature dependent result
- Demos require attention
Safety Precautions:
- Use of UL approved three-prong plug and outlet
- Eye protection required
- Gloves required
- Perform in a well-ventilated area
- Absorbent material on hand
- Avoid exposure to dusts or vapors
- Prevent release of reagents to the environment
Class: Properties of Solutions, Solubility, Intermolecular Forces, Hydrogen Bonding, Crystallization
Division: General Chemistry
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