Ideal Gases Flashcards
Gas laws are empirical in nature?
Not based on theory but arose from observation and experimental evidence.
Boyles Law
When temp is constant, pressure and volume are inversely proportional.
Charles Law
When pressure constant, volume directly proportional to absolute temp.
The Pressure Law
When volume constant, pressure directly proportional to absolute temp.
Absolute Zero
-237 degrees celsius or 0 K
No kinetic energy and volume and pressure of a gas is 0.
Ideal Gas Equation
pV = nRT
How to convert between number of moles and molecules?
multiplying number of moles by avogadros constant
No. molecules = number of moles x avgodros constant
Number of moles equation
number of moles = no. molecules / avogadros constant
Molar mass
mass in grams of one mole of a substance.
Found by finding relative molecular mass (sum of nucleons in a molecule of the substance).
Work done on a gas
To change its volume when it is at constant pressure.
Work done = pressure x change in volume
