chapter 10 review

Question 1

gas

Answer 1

most freedom of the states
mixes freely with other gases, changes its shape and volume to fit into any container, compressible

Question 2

pressure=

Answer 2

force / area

Question 3

how do you measure atmospheric pressure

Answer 3

barometer

Question 4

manometers

Answer 4

used to measure the pressure of a sample of gas

Question 5

Pgas(mm Hg)=

Answer 5

Patm +/- height difference

Question 6

1 mmHg=

Answer 6

1 torr

Question 7

1 atm=

Answer 7

760 mm Hg/torr

Question 8

1 atm=

Answer 8

101325 Pascals or 101.325 KPa

Question 9

boyles law

Answer 9

pressure and volume have an inverse relationship
P1V1=P2V2

Question 10

if volume increases (bl)

Answer 10

pressure decreases

Question 11

if pressure increases (bl)

Answer 11

volume decreases

Question 12

charles law

Answer 12

volume and temperature are directly related
v1/t1 = v2/t2

Question 13

if temperature increases (cl)

Answer 13

volume increases

Question 14

avogadros law

Answer 14

volume and moles of gas are directly related
v1/n1=v2/n2

Question 15

if volume increases (al)

Answer 15

moles increase

Question 16

1 mol of an ideal gas occupies

Answer 16

22.4 L at STP

Question 17

ideal gas law

Answer 17

PV=nRT

Question 18

ideal gas law R

Answer 18

0.08296 L atm/mol K

Question 19

gasses follow the ideal gas law best at

Answer 19

low pressures and high temperatures

Question 20

M (molar mass)=

Answer 20

mRT/PV

Question 21

density (for gas)

Answer 21

MP/RT

Question 22

the pressure gases are additive…

Answer 22

the total pressure of a mixture of gases is the sum of the partial pressures of each gas

Question 24

p total eq (2)

Answer 24

sum of p1+p2+p3…
=ntotal(RT/V)

Question 25

x1=

Answer 25

n1/ntotal=p1/ptotal

Question 26

p1=

Answer 26

(n1/ntotal)Ptotal

Question 27

kinetic molecular theory

Answer 27

-vol of gas is negligible
-particles are in constant motion and hit the walls of the container to create pressure
-particles of gases don’t attract or repel each other (elastic collisions)
-average kinetic energy of a gas is directly proportional to the temperature (kelvin) or a gas

Question 28

(KE)avg=

Answer 28

3/2 RT

Question 29

velocity=

Answer 29

squareroot(3RT/M)

Question 30

urms R

Answer 30

8.314 JK mole

Question 31

slower urms=

Answer 31

bigger atomic mass

Question 32

faster urms=

Answer 32

smaller molar mass

Question 33

effusion

Answer 33

passage of gas through tiny orifice into an evacuated chamber

Question 34

rate of effusion gas1/ rate of effusion gas 2 =

Answer 34

√MW2/√MW1

Question 35

diffusion

Answer 35

mixing of gases