Balloon Races – Ionization of Hydrochloric Acid and Acetic Acid
Common In Effect with Lead Iodide
Effect of Ionic Strength on Ion Dissociation
Precipitating Silver With Chromate and Chloride Ions
Precipitating Sodium Chloride From its Solution
Common Ion Effect with Lead Iodide
Description: Lead nitrate and potassium iodide solutions are mixed to form a saturated solution of lead iodide. The solution is filtered. Solid lead nitrate or potassium iodide are added to the filtrate, and more precipitate forms in each case.
Source: UW Card Catalog
Year: N/A Vol: N/A Page: N/A
Keywords: Solubility products, Lead Nitrate, Potassium Iodide, Lead Iodide, Precipitate, Chemical equilibrium, LeChatelier’s Principle
Rating: 
Hazard: High
- Oxidizing solids
- Acute toxicity – oral
- Acute toxicity – Inhalation
- Serious eye damage
- Reproductive toxicity
- Specific target organ toxicity – repeated exposure – central nervous system, thyroid
- Acute aquatic toxicity
- Chronic aquatic toxicity
Effectiveness: Good
- Good connection from demo to course material
- Low failure rate
- Time to results is low
- Experiment addresses preconceived notions
- Mild effects are seen by audience
Difficulty: Medium
- Sequential manipulations required to achieve results
- Procedures with some intermediate steps to result
- Use of scientific equipment
- Use of toxic reagents
Safety Precautions:
- Eye protection required
- Gloves required
- Avoid exposure to dusts, mists and droplets
- Absorbent materials on hand
- Perform on a chemically resistant surface
- Prevent release of reagents to the environment
Class: Aqueous Equilibrium and Precipitation Reactions
Division: General, Analytical Chemistry
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