Chapter 5: Properties Of Gases

Question 1

Miscible

Answer 1

Capable of being mixed in any proportion

Question 2

Pressure (P)

Answer 2

The ratio of a force to the surface area over which the force is applies

Question 3

Boyle’s law - P,V

Answer 3

Pressure and volume is an inverse relationship - V decrease, P increasesP1V1 = P2V2

Question 4

Charles’ law = V,T

Answer 4

Relationship b/w Volume & temp is a linear relationship = T increases, V increases V1/T1 = V2/T2

Question 5

Avogadro’s law - V, n(moles)

Answer 5

Volume & amount is a linear relationship = pressure constant, volume increases V1/n1 = V2/n2

Question 6

Ideal gas law

Answer 6

PV=nRT

Question 7

Ideal gas constant, R

Answer 7

Define behaviour of an ideal gas: R= 0.08206 L atm/ mol K

Question 8

STP

Answer 8

Standard temp & pressure: P = 1atm; T = 273K

Question 9

Molar volume

Answer 9

Volume occupied by one mole of an ideal gas at STP: V= 22.4L (calculated from the ideal gas law)

Question 10

Stoich calls: gases

Answer 10

Depend on mole/mol ratios of reactants and/or products, moles of gas can be calculated from ideal gas law if P,V, and T are known n=PV/RT

Question 11

Density of gas

Answer 11

Volume of any gas will be constant, the density will be different: D = Mw/V

Question 12

Molar mass

Answer 12

PV=nRT -> n/V = P/RT -> n/V = mol/L

Question 13

Combined gas law

Answer 13

P1V2/n1T1 = P2V2/n2T2

Question 14

Partial pressure

Answer 14

Ptotal = Pa + Pb + Pc + …

Question 15

Kinetic molecular theory

Answer 15

Says that a gas is a collection of particles in constant motion - a single particle moves in a straight line until it collides with another particle

Question 16

Assumptions:

Answer 16

1. The particle size is negligible 2. The average kinetic energy of a particle is proportional to the temperature (K) 3. The collision of one particle with another is complexity elastic