Chapter 8-The Gas Phase

Question 1

Pressure conversions 1 atm

Answer 1

760 MMHG
760 torr
101.325 kPa

Question 2

Standard temperature and pressure

Answer 2

0°C and 1ATM pressure

Question 3

Ideal gas definition

Answer 3

A hypothetical gas that has no intermolecular forces and occupies no volume.

Question 4

Ideal gas law

Answer 4

PV=nRT

Question 5

Combined gas law

Answer 5

(PV/T)1=(PV/T)2

Question 6

Calculation of density from ideal gas law

Answer 6

Density= P(mm)/RT

Question 7

Avogadro’s principal

Answer 7

1 mole of gas will occupy 22.4 L at STP

Question 8

Boyles law

Answer 8

Ideal gas comparison constant constant temperature

Question 9

Charles law

Answer 9

Ideal gas comparison at constant pressure

Question 10

Gay-Lussac’s Law

Answer 10

P1/T1=P2/T2

Ideal gas comparison with constant number of moles and volume

Question 11

Dalton’s law of partial pressure

Answer 11

In a container of mixed gases, each gas contribute to the overall pressure relative to the number of moles of that gas/the total moles of gas

Question 12

Henry’s law

Answer 12

Defined vapor pressure, the pressure exerted by evaporated particles above the surface of a liquid.

Question 13

Vapor pressure

Answer 13

As vapor pressure above its solution increases, the concentration of that solution will increase as gas is forced back into solution

Question 14

Average molecular speed eqn

Answer 14

KE= 1/2mv^2 =3/2 kBT

Question 15

Root mean square for speed

Answer 15

Sqrt((3RT)/m.m.)

Question 16

Diffusion

Answer 16

Movement of particles from high concentration to low concentration

Question 17

Graham’s law

Answer 17

The rates at which gases to fuse is inversely proportional to the Square root of their molar mass

Question 18

Effusion

Answer 18

The flow of gas particles under pressure from one compartment to another through a small opening