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27 Cards in this Set
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Compressibility

measure of how much the volume of matter decreases under pressure.


Why are gases easily compressed?

Because of the space between the particles in a gas.


What factors affect gas pressure?

The amount of gas, volume and temperature.


Boyle's Law

For a given mass of of gas at a constant temperature, the volume of the gas varies inversely with pressure.


Boyle's Law equation

P1 x V1 = P2 x V2


Charles's Law

the volume of a fixed mass of gas is directly proportional to its Kelvin temperature if the pressure is kept constant.


Charles's Law equation

V1/T1 = V2/T2


GayLussac's Law

the pressure of a gas is directly proportional to the Kelvin temperature if the volume remains constant.


GayLussac's Equation

P1/T1 = P2/T2


The Combined Gas Law

The combined gas law allows you to do calculations for situations in which only the amount of gas is constant


Combined Gas Law Equation

P1 x V1/T1 = P2 x V2/T2


Ideal Gas Law

To calculate the number of moles of a contained gas requires an expression that contains the variable n. The gas law that includes all 4 variables  P, V, T and n is the ideal gas law.


Ideal Gas Law equation

P1 x V1/T1 x n1 = P2 x V2/T2 x n2 OR
P x V = n x R x T or PV = nRT 

What is the value of the ideal gas constant R?

r = 0.0821 L x atm/mole x K
or 8.315 dm3 x kPa/mole x K 

When do real gases differ most from an ideal gas?

at low temperatures and high pressures


Dalton's Law of partial pressures

at constant volume and temperature, the total pressure exerted by a mixture of gases is equal to the sum of partial pressures of the component gases


Dalton's equation

P total = P1 + p2 +p3+...


How many liters does 1 mole of gas occupy at standard tyemperature (273K) and pressure(101.3kPa) (STP)?

22.4L


Avogadro's Principle

V1/n1 = V2/n2


1 atmosphere is equal to how many kPA?

1 atm = 101.3kPA


How many mm HG is 1 atmosphere equal to?

1 atmosphere is equal to 760 mm HG;


converting kPa to atmospheres

1 atmosphere/101.3 kPa


converting kPa to mm HG

760mm HG/101.3kPa


Kelvin boiling point

373 degrees Kelvin


Kelvin freezing point

273 degrees Kelvin


1 bar is equal to

14.503774 pounds per square inch (psi)


1 torr

1 mmHG at 0 degrees Celsius
