The Gas pressure formula is given as,
            Â
Where,
F = impact force due to gas collisions in Newtons (N),
A = area in meter square
The Ideal gas pressure formula is given as,
Where,
V = volume, Â
n = number of moles,
R = Gas constant, (8.3145 Jol/mol/K)
T = temperature.
The SI unit for Gas pressure is expressed in Pascals (Pa).
Example 1
There are 500 moles of gas molecules in a container. If 220 K temperature is applied to the gas of a volume of 40 L, identify the Gas pressure.
Solution
Given :
No of moles n = 500 mol,
temperature T = 220 K,
Volume V = 40 L
The Gas pressure formula is given by,
P = 500 ×0.082×220 / 40
P = 225.5 Pascal
Example 2
If the Gas molecules move with the force of 300 N in the area of 50 m2. Determine its gas pressure.
Solution:
Given:
Force F = 300 N,
area A = 50 m2
The gas pressure formula is given by,
P = F / A
P = 300 / 50
P = 6 Pascal
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