Chapter 5 Flashcards
Volume changes with…
pressure
gases ___ when heated and ___ when cooled
expand
shrink
What two things effect atmospheric pressure?
altitude and humidity
What is the formula if in an open end manometer the gas is higher than the atmospheric pressure?
Pgas = Patm + ^h
(Pg > Pa)
An ideal as is a gas that…
exhibits linear relationships among these variables (pressure, temperature, volume, and amount)
Boyle’s law
at constant temperature and number of moles, the volume occupied by a fixed amount of gas is inversely proportional to the external pressure.
With Boyle’s law at constant tempo and moles pressure _____ as volume _____.
decreases
increases
What is the formula for Boyle’s law?
P1V1=P2V2
Charles Law
at constant pressure, the volume occupied by fixed amount of gas is …
In Charles law aV1t constant pressure and moles volume _____ as temperature _____.
decreases
decreases
What is the charles law formula?
V1/T1 = V2/T2
What is the combined gas law?
P1V1/T1 = P2V2/T2
Avogadro’s Law
At constant temp and pressure the volume occupied by a gas is directly proportional to the amount of gas (moles)
Avogadro’s law
V1/N1 = V2/N1
the volume at STP is…
22.4 L
