Chapter 9 Temperature And Ideal Gases

Question 1

Thermal equilibrium

Answer 1

No net transfer of thermal energy between bodies in thermal contact and bodies at the same temperature

Question 2

Celsius and Kelvin

Answer 2

+273.15

Question 3

Avogadro constant

Answer 3

6.02×10^23

Question 4

Molar gas constant

Answer 4

pV/T = R = 8.31 J K^-1 mol^-1

Question 5

Ideal gas

Answer 5

Theoretical gas is that obeys the equation of state pV=nRT at all pressures p, volumes V and thermodynamic temperatures T for fixed mass of gas.

Question 6

Assumptions of kinetic theory of gases

Answer 6

1. Any gas is made up of a large number of particles
2. The particles are in constant and random motion
3. The particles make perfectly elastic collisions among themselves and with the wall of the container
4. Volume of each particle is negligible compared to the volume of gas
5. Forces between particles and negligible except during the time of collision. (Microscopic potential energy of particles can be set to 0 J)
6. Duration of collagen is negligible compared with the time interval between collisions

Question 7

Kinetic theory equation

Answer 7

pV = 1/3 Nm<c^2>

Question 8

Kinetic energy of a gas

Answer 8

Ek=3/2pV