Gases
Gases- have no defined shape and no defined volume
Pressure Conversions
1atm equals:
Boyle's Law
The volume and pressure are proportional
when the volume decreases, pressure increases
assumption: temperature must be constant in order to be correct
PV=PV
P= pressure
V= volume
Charle's Law
Temperature and volume are proportional
when temperature increases, volume increases
assumption: pressure is constant
Vi/Ti = Vf/Tf
V= volume
T= temperature
Combined Gas Law
combines both Boyle's law and Charles' Law
assumption: number of moles is constant
PiVi/Ti = PfVf/Tf
Avogadro's Law
relationship between the volume of a gas and the number of molecules present in the gas sample
number of moles and volume are proportional
number of moles increases, volume increases
Vi/ni = Vf/nf
Ideal Gas Law
came from the observation of Boyle's, Charles', and Avogradro's Law
assumption: gas must be ideal
PV=nRT
R= universal gas constant
0.08206L*atm/(mol*K)
- flow like liquids and are fluids
- the difference between gases and liquids are the distance between the molecules
Pressure Conversions
1atm equals:
- 760 mm Hg
- 760 torr
- 14.5 psi
- 101,325 Pa
Boyle's Law
The volume and pressure are proportional
when the volume decreases, pressure increases
assumption: temperature must be constant in order to be correct
PV=PV
P= pressure
V= volume
Charle's Law
Temperature and volume are proportional
when temperature increases, volume increases
assumption: pressure is constant
Vi/Ti = Vf/Tf
V= volume
T= temperature
Combined Gas Law
combines both Boyle's law and Charles' Law
assumption: number of moles is constant
PiVi/Ti = PfVf/Tf
Avogadro's Law
relationship between the volume of a gas and the number of molecules present in the gas sample
number of moles and volume are proportional
number of moles increases, volume increases
Vi/ni = Vf/nf
Ideal Gas Law
came from the observation of Boyle's, Charles', and Avogradro's Law
assumption: gas must be ideal
PV=nRT
R= universal gas constant
0.08206L*atm/(mol*K)