Flashcards in Ap Chem Ch. 10-11 Deck (84)
4 properties of gases:
-expand to fill their containers
-always mix homogeneous with other gases
-only occupy a small fraction of the actual volume of their container
-extremely low densities
Force(massXacceleration) acting on an object per unit area.
Weight of air per unit of area
1 Pa= 1 N/m^2
1 bar= 10^5 Pa= 100 kPa
Difference in the heights measured in mm(h) of two connected columns of mercury
mm Hg , torr
Normal atmospheric pressure at sea level
Convertions for standard pressure
1 atm = 760 torr = 760 mm Hg = 101.325 kPa
Volume is _________ proportional to Pressure.
Voulme is ___________ proportional to temperature
The volume of a gas at constant temperature and pressure is _________ proportional to the number of moles of the gas.
Pressure is ________ proportional to kelvin temperature.
➖ = ➖
➖ = ➖
The product of the pressure and volume of a fixed quantity of gas is ______ proportional to the kelvin temperature.
Conbined gas law
➖➖ = ➖➖
Ideal gas law:
Constants for R( ideal gas constant)
.08206 L(atm) / mol( k)
8.314 L(kPa) / mol(k)
62.36 L(mm Hg) / mol(k)
8.314 J / mol(k)
Solving for the volume of 1 MOL at standard temperature and pressure (STP) gives 22.41 L / mol
Standard molar volume
Molar mass form of ideal gas law
Density form of the idal gas law
In which cases would you know you have to use Gas stoichiometry ?
* they have to be at constant pressure and temperature
* look for an equation
The total pressure of a mixture of gases equals the sum of the pressures that each would exert if it were present alone.
Dalton's law of partial pressures
Gases consist of large numbers of molecules that are in continuous, random ______.
The speed of a molecule possessing AVERAGE KINETIC ENERGY.
The escape of gas molecules through a tiny hole into an evacuated space.
The spread of one substance throughout a space or throughout a second substance.
Which diffuse faster, lighter molecules or heavier molecules??