Acids and Bases- Amphoteric Properties of Aluminum Hydroxide

Amphoteric Properties of Aluminum Hydroxide

Description: Precipitates of aluminum hydroxide dissolve in either strong acid or base.

Source: Shakhashiri, B.Z. Chemical Demonstrations: A Handbook for Teachers of Chemistry

Year: 1989  Vol: 3  Page: 128

Keywords: Amphoteric properties, Aluminum, Solubility, Acid, Base

Rating:

Hazard: Medium

• Acute toxicity hazard
• Flammability hazard
• Production of flammable gases
• Skin corrosion hazard
• Corrosive to metals
• Serious eye damage

Effectiveness: Good

• Good connection from demo to course material
• Contrast between systems is noticeable
• High reliability
• Time to results is low
• Mild effects are seen by audience

Difficulty: Medium

• Procedures with some intermediate steps to results
• Requires precise attention to reaction progress
• Use of mildly reactive substances
• Simple manipulations for most to perform

Safety Precautions:

• Eye protection required
• Gloves required
• Perform in a well-ventilated area
• Chemically resistant surface recommended
• Sodium bicarbonate on hand
• Absorbent materials on hand
• ABC fire extinguisher on hand

Class: Acids and Bases, Amphoteric Properties, Solubility

Division: General

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