Properties of Gas Flashcards
What is gas?
Gas is defined as a substance that has no well-defined boundaries but diffuses rapidly to fill any container in which it is placed
What are the properties of Gas?
Temperature
Pressure
Volume
How do you convert from Celsius to Kelvin?
Celsius+273
What temperature would gas occupy no volume if it didn’t liquify?
0K
State Boyles Law
At content temperature the volume of a fixed mass is inversely proportional to its pressure
State Charles law
At constant pressure the volume of a given mass of any gas is directly proportional to the Kelvin temperature
State Gay-Lussac’s Law of Combining Volumes
the volume of theses taking part in a chemical reaction show simple whole number ratios to one another when those volumes are measured at the same temperature and pressure
What is Avogadro’s Law
It states that equal volumes of gases contain equal numbers of molecules under the same conditions of temperature and pressure
What is an ideal gas
It is one that obeys all the assumptions of the kinetic theory of gases under all conditions of temperature and pressure
State the 5 Assumptions of the Kinetic Theory of Gases
- Gases consist of small particles in continuous motion
- There are no attractive or repulsive forces between the molecules of a gas
- The gas molecules are so mall and spread out that the actual volume of all the molecules is negligible compared with the space they occupy
- Collisions between the molecules of a gas are perfectly elastic
- The kinetic energy of the molecules in a gas is proportional to the temperature measured on the Kelvin scale
What is a Real Gas?
A real gas differs from ideal gases because forces of attraction exist between the molecules, and the volume of the molecules is not negligible
Why do gases deviate from ideal gas behaviour
At high pressures and low temperatures because the molecules are close together and moving slowly, the attractive forces between the molecules can be significant under these conditions
