I’m so confused can anybody help..?
- Donnie PorkoLv 78 months agoFavorite Answer
PV = nRT
Just look st the equation. If one is one one sude and the other is on the other side then they’re directly proportional.
P and V are on the left side of the = sign so they’re not directly proportional.
P and T are on opposite sides of the = sign, so they’re directly proportional.
You can tell if you keep the other variables the same. Let’s see if P and T are directly proportional. You keep V, n, R the same, so we’ll assign a random number of 2. Let’s make P = 5
5(2) = (2)(2)T
T = 2.5
If we change P to 3:
3(2) = (2)(2)T
T = 3/2
T went down when P went down so they’re directly proportional.
For inversely proportional, they’re on the same side of the = sign.
- AlanLv 78 months ago
PV = nRT
where P = pressure
V = volume
n = number of moles
so rearrange the equation for each pair of variables.
Pressure and volume
P = nRT/V
so if nRT are constant , P=k/V
so pressure and volume are inversely proportional.
pressure and temperature
T = PV/nR
so if V/nR are constant
T = Pk
so pressure and temperature are directly proportional
Amount of gas and pressure
Amount of gas is related to n (number of moles)
n = PV/RT
so if V/RT are constant
n = Pk
so the amount of gas and pressure are directly proportional
amount of gas and volume
V = nRT/P
so if RT/P is constant
V = nk
so amount of gas and volume are directly proportional
Temperature and Volume
V = nRT/ P
so if n and P are held constant
V = kT
so temperature and volume are directly proportional