Gas Laws

Question 1

How do particles in gas move?

Answer 1

They move very far apart and very fast.

Question 2

How do gasses expand?

Answer 2

Gasses expand to fill any volume available to them.

Question 3

Where does pressure come from?

Answer 3

Gas particles colliding with solid objects.

Question 4

The pressure of gas is equal to what?

Answer 4

The frequency of collisions.

Question 5

If the particles of gas increase in speed, what else will increase?

Answer 5

The temperature of the gas sample.

Question 6

Is gas volume effected by outside changes in pressure and temperature?

Answer 6

Yes

Question 7

What is Boyle’s Law?

Answer 7

Pressure and volume is inversely related. (PV=k)

Question 8

What is Charles’ Law?

Answer 8

Temperature (K) and volume are directly related. (V/T=k)

Question 9

What does k stand for?

Answer 9

Constant

Question 10

What is a closed system?

Answer 10

The # of moles of a gas does not change.

Question 11

How do you get Kelvin (K) from Celsius (C)?

Answer 11

273 + C = K

Question 12

What does solubility represent?

Answer 12

The maximum amount of solute that can dissolve in 100 grams of solvent at a given temperature. (limit)

Question 13

What kind of relationship does solubility of gas and temperature have?

Answer 13

Inverse relationship

Question 14

What is Henry’s Law equation?

Answer 14

S1/P1=S2/P2

Question 15

What is Concentrations?

Answer 15

How much solute is dissolved within an amount of solution. (quantitative)

Question 16

What kind of property is dissolving?

Answer 16

A reversible, physical property.

Question 17

What is Dilute?

Answer 17

A solution mostly of solvent with a small amount of solute.

Question 18

What is a Concentrated solutions?

Answer 18

Solution has a lot of dissolved solute compared to the total amount of solution.

Question 19

What is the universal gas constant?

Answer 19

0.0821 Latm/molK

Question 20

What is the Ideal Gas Law equation?

Answer 20

PV = nRT (P=atm, V=L, n=#moles, T=K, R= gas constant)

Question 21

What is a vacuum?

Answer 21

A space that does not contain any particles of matter.

Question 22

What is Barometer?

Answer 22

An instrument that measures atmospheric pressure.

Question 23

What is Dalton’s Law?

Answer 23

States that in a mixture of non-reacting gases, the total pressure exerted is equal to the sum of the partial pressures of the individual gases.

Question 24

What is Atmospheric pressure?

Answer 24

The pressure we feel from the air around us.

Question 25

What is standard pressure?

Answer 25

1 atm = 760 mmHg = 760 Torr