Gas Laws And Formulas

Question 1

Formula for Pressure

Answer 1

P = F/A (in2)
As force increases, pressure increases

Question 2

Pascal’s law:

Answer 2

Pressure applied to a confined fluid is transmitted equally and undeminished in all directions.

Question 3

Heat of Compression

Answer 3

Energy added to gas by compression

Question 4

Adiabatic Compression

Answer 4

Compressing gas without losing or gaining heat to its surroundings

Question 5

Boyle’s Law

Answer 5

Temp is constant.
Volume varies inversely to pressure
P1 x V1 = P2 x V2

Question 6

Dalton’s Law

Answer 6

Sum of pressure of each gas = total pressure
Volume and temp are constant
P1+P2=Pt

Question 7

Charle’s Law

Answer 7

Pressure is constant.
Volume and temp vary directly to absolute temp. Double volume = double temp
V1/T1 = V2/T2 or
V1xT2 = V2 x T1

Question 8

Gau-Lussac’s Law

Answer 8

Volume constant
Absolute pressure varies directly with absolute temp
P1/T1 = P2/T2
P1xT2 = P2xT1

Question 9

Combined Gas Law

Answer 9

PxV/T =k(gas constant)
p1xv1/t1 = p2xv2/t2

Question 10

Avogadro’s Law

Answer 10

Equal volumes of 2 different gases at equal pressures and temp contain equal numbers of molecules, regardless of the mass of the gases

Question 11

Ideal Gas Law

Answer 11

P1 x V1/T1 = P2 x V2/T2

Question 12

Define pressure

Answer 12

Force per unit of area

Question 13

Formula to calculate pressure

Answer 13

P = Force(lb)/Area(in2)

Question 14

Pascal’s law states:

Answer 14

Pressure applied upon a confined fluid is transmitted equally and undiminished in all directions.

Question 15

Critical temp

Answer 15

The highest temp at which a substance can be liquefied.

Question 16

Critical pressure

Answer 16

The pressure at which the gas liquefied when the substance is at its critical temp.

Question 17

Pascal

Answer 17

Unit of pressure used in SI system equal to 1 Newton per Sq in

Question 18

Bubble point

Answer 18

The temp a liquid zeotrope first begins to boil

Question 19

Due point

Answer 19

The temp a,vapor zeotropic first begins to condense

Question 20

Flash point

Answer 20

The temp the vapors of a refrigerant lubricant ignite.

Question 21

Floc point

Answer 21

The highest temp at which a wax separation occurs in a refrigerant lubricant

Question 22

Fractionation

Answer 22

Separation of a zeotropic blend into its individual refrigerants during phase change.

Question 23

Pour point

Answer 23

The lowest temp a refrigerant lubricant will flow.

Question 24

Viscosity

Answer 24

A fluids resistance to flowing.
High viscosity, flows slowly
Low viscosity, flows freely

Question 25

Zeotrope

Answer 25

A refrigerant blend that has a range of boiling and condensing points because each refrigerant acts independently of the others.

Question 26

A compression ratio of — makes it possible to use asingle stage compressor

Answer 26

10:1

Question 27

A compression ratio of more than — usually reaqures a 2 stage compressor

Answer 27

12:1