Ch 6 Lec 2 - Gases Flashcards
the total pressure of a mixture of gases equals the sum of the pressures that each gas would exert if present alone
Dalton’s law of partial pressures
pressure exerted by a single component
partial pressure
kinetic molecular theory of gases where gases consist of large blank of molecules that are in blank random motion
numbers, constant
kinetic molecular theory of gases where the combined blank of molecules in a gas is negligible compared to the blank volume
volume, total
kinetic molecular theory of gases where blank forces between blank molecules are blank
attractive and repulsive, gas, negligible
kinetic molecular theory of gases where energy can be blank between molecules when they blank but the average blank of the molecules doesn’t change with time (at constant temp)
transferred, collide, kinetic energy
kinetic molecular theory of gases where the blank of the molecules is proportional to absolute blank
average kinetic energy, temperature
although gases have an blank and blank, individual molecues travel at varying blank
average kinetic energy, an average speed, speeds
at higher temperatures, average speed blank
increases
larger molecules are blank than smaller molecules at the same temperature
slower
the peak of the percent molecules and increasing speed graph
modal speed
speed of a molecule that possesses the average KE of the gaseous sample
root-mean-squared speed
Kinetic energy equation
.5m(urms)^2
urms equation
sqrt(3RT/molecular mass in kg/mol)
Joules equation
kgm^2/s^2
if volume increase then KE blanks and urms blanks
stays the same
if volume increases then the distance between molecules blanks
increases
if volume increases, there are blank collisions between molecules and container walls
fewer
if volume increases, pressure blanks
decreases
if temp increases then pressure blanks
increases
spreading out of gas molecules throughout a space or room
diffusion
escape of gas molecules through a tiny pinhole from container
effusion
graham’s law of effusion says that the rate of effusion of a gas is blank proportional to the blank of its mass
inversely, square root
graham’s law of effusion equation
sqrt(mass of B/mass of A)
van der waals equation
(P+((n^2a)/v^2)))(V-nb)=nRT
a and b in van der waals equation generaaaaaaaaaally blank with increasing blank
increase, mass
