Acids and Bases- Acidic and Basic Properties of Oxides

Acidic and Basic Properties of Oxides

Description: Acid and base oxides when dissolved in water change the color of universal indicator. A pH meter can also be used.

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

Year: 1989   Vol: 3   Page: 109

Keywords: Oxides, Acidic, Basic, Indicators, Mixed, Overhead projectors

Rating:

Hazard: Medium

• Short term aquatic toxicity hazard
• Acute toxicity hazard
• Flammability hazard – production of flammable gas
• Specific organ toxicity – respiratory system
• Skin corrosion hazard
• Serious eye damage
• Corrosive to metals
• Electric shock hazard

Effectiveness: Average

• Results are observable with guidance
• Somewhat connected conceptually with course material
• Mild effects are seen by audience
• Good reliability
• Time to results is low

Difficulty: Medium

• Addition of reagents sequentially
• Handling of toxic chemicals
• Prior training recommended
• Experiments in which a display is used
• Simple manipulations for most to perform
• Multi-step procedures

Safety Precautions:

• Eye protection required
• Gloves required
• Perform in a well-ventilated area
• Downdraft hood recommended
• Chemical spill kit on hand
• Chemically resistant surface recommended
• ABC fire extinguisher on hand
• Use UL approved three-prong plug and outlet
• Prevent release of reagents to the environment

Class: Acids and Bases, Period Trends, Metals verses Non-Metals, Groups VIB and VIIB (16 and 17)

Division: General, Inorganic Chemistry

Home|  Inorganic Chemistry Demonstrations