Equilibrium Between Nitrogen Dioxide and Dinitrogen Tetroxide
Effect of Pressure on Melting Point of Ice
The Liquid Phase of Carbon Dioxide
Vapor Pressure of Pure Liquids
Getting Colder: Freezing-Point Depression
Getting Hotter: Boiling-Point Elevation by Nonvolatile Solutes
Osmotic Pressure of a Sugar Solution
Vapor Pressure Of Solutions: Raoult’s Law
Boiling Two Liquids at Room Temperature
Salting Out: Making Liquids Immiscible
Electrolysis of Potassium Iodide
Hydrogen Ion Concentration Cell
Acid-Base Properties of Amino Acids
Electrical Conductivity of Liquids and Solutions
Instrumental Recording of a Titration Curve
A Visual Demonstration of Raoult’s Law
Acid-Base Properties of Amino Acids
Description: When an acidic amino acid solution is titrated with a base, the resulting curve can be used to determine the pKa values of the amino acid.
Source: Kristen Johnson
Year: 1999 Vol: N/A Page: N/A
Keywords: Amino Acid, pKa value, Titration, Base
Rating: 
Hazard: Some
- Electric shock hazard
- Acute toxicity hazard
- Skin corrosion hazard
- Aquatic toxicity hazard
- Corrosive to metals
Effectiveness: Average
- Results are observable with guidance
- Mild effects are seen by audience
- Secondary observations
- Time to result is medium
Difficulty: High
- Experiments in which data recording and display are necessary
- Multi-step procedures with varying results depending on order or amount of reaction
- Demos require training or extended practice
- Use of scientific equipment
Safety Precautions:
- Eye protection required
- Gloves required
- Use of UL approved three-prong plug and outlet
- Absorbent materials on hand
- Sodium bicarbonate on hand
- Avoid exposure to mists or droplets
- Prevent release of reagents to the environment
Class: Biochemistry, Acids and Bases, Equilibrium
Division: General, Analytical Chemistry, Physical Chemistry
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