Vapor Pressure of a Mixture: Raoult's Law
Raoult's Law, which describes the vapor pressure of a mixture, is demonstrated using barometers.
liquids
Vapor Pressure of a Mixture: Raoult's Law - Example 2
Another mixture of decane and diethyl ether is used to demonstrate Raoult's Law. Students are asked to predict the vapor pressure of the mixture.
Vapor Pressure of a Mixture: Raoult's Law - Example 2 Ending
Another mixture of decane and diethyl ether is used to demonstrate Raoult's Law. Students are asked to predict the vapor pressure of the mixture, and the answer is shown.
Canned Heat
Liquid ethanol is poured into a saturated calcium acetate solution and a solid gel is formed. The gel burns like canned heat (Sterno™).
Boiling by Cooling - Demonstration
Water in a sealed flask is made to boil below its normal boiling point by cooling the water vapor in the flask.
Boiling by Cooling - Counter Example
Cooling the liquid does not cause the water to boil.
Drinking Bird: Introduction
Vapor pressure differential is responsible for the bobbing action of a novelty store drinking bird.
Drinking Bird: Effect of Heat
Heating the body of a novelty store drinking bird causes it to tip over and drink.
Drinking Bird: Effect of Water (Condensation/Cooling)
Evaporating water can cool the head of a novelty store drinking bird, causing it to tip over and drink.
Viscosity of Liquids - Qualitative Test
The flow of four different liquids from four pipets is started simultaneously to test their viscosity.