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kinetics and gas laws review (CE/H) Flashcards | StudBud
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kinetics and gas laws review (CE/H)
kinetics and gas laws review (CE/H)
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1
What is new volume of 400.0 mL gas sample..temp change: 22.0 °C to 30.0 °C and a pressure change : 1atm to 360 mmHG
867 mL
22.4 L
867 L
22.4 mL
2
The diagram below show one of the postulates of the Kinetic Molecular Theory.
average kinetic energy is measured by temperature
there are no attractive or repulsive forces between gas particles
no attraction between the gas particles
all collisions between particles are perfectly elastic
3
3 gases (8.00 g CH4, 18.0 g C2H6, and ?g C3H8) in a 10.0 L container. 23.0 °C. total pressure=4.43 atm. P.P of C3H8?
1.72 atm
12 atm
4.5 atm
.5 atm
4
STP means...
1 atm, 273 K
1 atm, 237 K
1 atm, 287 K
1 atm, 250 K
5
A compound of carbon, hydrogen, and chlorine effuses 0.411 times as fast as Neon. Select the correct molecular formula
C2H3Cl
C2H2Cl2
CHCl3
CH2Cl2
6
The escape of gas through a small hole in a container
diffusion
effusion
compressibility
partial pressure
7
65 torr = ? mmHg
-273 mmHg
impossible to know
65 mmHg
1 mmHg
8
Convert 0.357 atm to torr
36.2 torr
4.7 x 10-4
3.52 x 10-3
271 torr
9
One of the postulates of Kinetic Molecular Theory states that gases:
stinks
are mostly empty space
Can't be compressed
have high density
10
What is the main difference between real and ideal gases?
Ideal gases don't have intermolecular forces.
Real gases don't follow mathematical relationships.
Ideal gases have predictable mathematical laws.
Real gases don't follow the theory of KMT.
11
Celcius to Kelvin Conversion
degrees C = K + 273
K = degrees C - 273
K = degrees C + 273
degrees C = K * 273
12
Which of the following is an INCORRECT pressure conversion.
1 atm = 760 mmHg
1 atm = 101.325 kPa
1 atm = 760 torr
760 mmHg = 1 torr
13
What is the biggest difference between real and ideal gasses?
Real gases don't have volume or attractive/repulsive IMFs.
Ideal gases don't have volume or attractive/repulsive IMFs.
Nothing, they are the same thing.
Real gases exist and ideal gases are imaginary.
14
1 mole of any gas at STP occupies...
22.4 L
11.2 L
depends on the gas
15
The speed of a chemical reacton
is independent of the amount of contact surface of a solid involved
btwn ions in aqueous solutions is fast bcse no bonds need to be broken
is constant no matter what the temperature is
btwn gases should always be extremely rapid because of high kinetic energy
16
20.83 g of a gas occupies 4.167 L at 79.97 kPa at 30.0 °C. What is its molecular weight?
4.0026 g/mol
157.5 g/mol
.00634 g/mol
32 g/mol
17
A gas occupies 11.2 liters at 0.860 atm. What is the pressure if the volume becomes 15.0 L?
0.642 atm
1.152 atm
11.2 atm
195.34 atm
18
The Kinetic Molecular Theory postulates a direct relationship between:
temperature and average kinetic energy.
pressure and effusion rate.
pressure and average kinetic energy.
volume and average kinetic energy.
19
volume of 25.47 L holds 1.050 mol of oxygen gas (O2). What is the volume if 7.210 g of oxygen gas is removed.
20.00 L
450 L
1 L
.567 L
20
Measures ATMOSPHERIC PRESSURE
barometer
thermometer
rain gauge
anemometer
21
Convert .3289 atm into mmHg.
249.964 mmHg
101.3 mmHg
760 mmHg
3,289 mmHg
22
All gases if that have the same number of moles will have
The same number of protons
THe same number of electrons
The same volume
The same mass
23
A gas occupies 1.00 L at standard temperature. What is the volume at 333.0 °C?
.82 L
.45 L
1.22 L
2.22 L
24
Boyles Law, as pressure goes down then volume
doesn't change
goes up
decreases
goes down
25
Which these is a difference between particles of real and ideal gases?
Real have electrical charges and ideal do not
Real have no significant mass and Ideal gases do
Real gas have volume and ideal do not
Real have thermal energy and ideal do not
