Charles's Law states that the volume and absolute temperature of a fixed quantity of gas are directly proportional under constant pressure conditions
Further explanation
There are several gas equations in various processes:
1. The general ideal gas equation
PV = nRT
PV = NkT
N = number of gas particles
n = number of moles
R = gas constant (8,31.10 ^ 3 J / kmole K
k = Boltzmann constant (1,38.10 ^ -23)
n = = N / No
n = m / M
n = mole
No = Avogadro number (6.02.10 ^ 23)
m = mass
M = relative molecular mass
2. Avogadro's hypothesis
In the same temperature and pressure, in the same volume conditions, the gas contains the same number of molecules
So it applies: the ratio of gas volume will be equal to the ratio of gas moles
V1: V2 = n1: n2
2. Boyle's Law
At a fixed temperature, the gas volume is inversely proportional to the pressure applied
p1.V1 = p2.V2
3. Charles's Law
When the gas pressure is kept constant, the gas volume is proportional to the temperature
V1 / T1 = V2 / T2
4. Gay Lussac's Law
When the gas is heated in a tube whose volume does not change, the gas pressure in the tube is proportional to its absolute temperature
P1 / T1 = P2 / T2
5. Law of Boyle-Gay-Lussac
Combined with Boyle's law and Gay Lussac's law
P1.V1 / T1 = P2.V2 / T2
P1 = initial gas pressure (N / m2 or Pa)
V1 = initial gas volume (m3)
P2 = gas end pressure
V2 = the final volume of gas
T1 = initial gas temperature (K)
T2 = gas end temperature
So the correct answer is Charles' Law, where at constant pressure, the volume of gas will be inversely proportional to its temperature
Learn more
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