L'État Gazeux

Question 1

What is the Ideal Gas equation? What are the SI Units in it?

Answer 1

pV=nRT

p: Pa or N m^-2
V: m^3
n: mol
T: Kelvin

Question 2

What are properties of ideal gas?

Answer 2

• i.m.f. of attract n btw gas particles negligible
• total vol. of gas particles negligible compared to vol. of container
• gas particles in continuous random linear motion
• all collisions btw gas particles perfectly elastic so no KE lost on collision

(real gas have opposite properties)

Question 3

What is Dalton’s Law?

Answer 3

In a mix of gas that don’t react chemically, total pa of mix = sum of partial pa exerted by each gases

Question 4

What conditions allow real gas to tend towards ideal gas behaviour? Explain

Answer 4

• Low Pa
  gas particles far apart & vol of particles less significant compared to container -> less significant imf of attractions
• Very high temperature
  gas particles hv high KE, so imf of attractions easily overcome, bcome less significant

(opp. conditions mean deviate more from ideality)