Flashcards in Gas Laws Deck (14):
Define a mole of a substance
A mole has as many particles as 12g of carbon-12
What is avogadros law?
It states that equal volumes of gases contain the equal number of molecules under equal conditions of temperature and pressure
What does Charles law state?
At constant pressure, the volume and temperature of a fixed mass of a gas are directly proportional to eachother
What does Boyle’s law state?
At a constant temperature, the volume and pressure of a fixed mass of a gas is inversely proportional
Give the formula for the law of combining volumes
T1 = T2
What is standard pressure and temperature
Temp - 273K
Pressure - 1 x 10^5 pascals
State gay-lussac’s law
When gases react, the volumes of the reacting gases and any gaseous products bear a simple whole number ratio when volumes are measured at the same temperatures and pressure
Explain how avogadro’s law provides an explanation for gay-lussac’s law
Avogadros law explained gay-lussac’s law of combining volumes in whole numbered ratios more in terms of combining of actual molecules of reacting gases and still kept the pressure and temperature constant
What is an ideal gas?
Obeys all Gas laws and the kinetic theory of gases at all temperatures and pressures
Give one reason why real gases differ from ideal gases
Molecules of gases are often attracted weakly to each other collisions not actually elastic
collide with eachother and often lose or gain energy
Explain the kinetic theory of gases
Collisions in gases are always elastic [no reaction ever occurs]
No attraction or repulsions
Take up such a small volume
When are gases closest to ideal behaviour?
How to find out which gas is closest to an ideal gas