Vapor Pressure: Molecular Size - Pentane, Hexane and Heptane
The vapor pressures of pentane, hexane and heptane are compared using barometers to show the effect of molecular size on vapor pressure.
The vapor pressures of pentane, hexane and heptane are compared using barometers to show the effect of molecular size on vapor pressure.
Raoult's Law, which describes the vapor pressure of a mixture, is demonstrated using barometers.
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.
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.
Water in a sealed flask is made to boil below its normal boiling point by cooling the water vapor in the flask.
Cooling the liquid does not cause the water to boil.
Balloons filled with gases less dense than air will rise.
Balloons filled with gases more dense than air will fall.
Carbon dioxide gas is poured down a covered trough with candles inside.
Methane gas from a beaker flows up a covered trough to a candle flame.