Chen properties of gases

Question 1

Gas

Answer 1

Substance that has no well defined boundaries but diffuses rapidly to fill any container in which it is placed

Question 2

Standard temperature

Answer 2

273K

Question 3

Standard pressure

Answer 3

1x10^5 =100kpa

Question 4

Boyles law

Answer 4

At constant temperature, the volume of a fixed mass of gas is inversely proportional to its pressure

Question 5

Gay-lucases law of combining volumes

Answer 5

The volumes of the reacting gases and the volumes of any gaseous products are in the ratio of small whole numbers provided the volumes are measured at the same temperature and pressure

Question 6

Avagadros law

Answer 6

Equal Volumes of gases contain equal numbers of molecules under the same conditions of temperature and pressure

Question 7

Ideal gas

Answer 7

One that perfectly obeys all the assumptions of the kinetic theory of gases under all conditions of temperature and pressure

Question 8

Real gases

Answer 8

Differ from ideal gases- forces of attraction and repulsion do exist between the molecules and the volume of the molecule is not negligible

Question 9

Charles law

Answer 9

At constant pressure the volume of a fixed mass of gas is directly proportional to its temp measure on the Kelvin scale

Question 10

Assumptions of the kinetic theory of gasses

Answer 10

Gases are made up of particles that are in continuous rid motion colliding with each other
No attractive or repulsive forces between molecules of gas
Gas molecules are so small and widely separated that the actual volume of all the molecule is negligible compared with the space they occupy
When molecules collide the collisions are perfectly elastic no loss of kinetic energy

Question 11

Limitations of kinetic theory

Answer 11

All real gases do have tiny attractive or repulsive forces
Under high pressure when molecules are crowded it is clear that their volume is not negligible to the space they occupy.