How does pressure affect the density of gases?
Answer:
The density of most gases is proportional to pressure. (at constant temperature)
For ideal gases, the equation of state is given as
Pv = RT
where,
P = Pressure
v = Specific volume (m^3/Kg)
R = Gas constant (kJ/Kg.K)
T = Temperature (K)
The above equation can be written in terms of density as specific volume is reciprocal of density.
P = ρRT
where,
ρ = density (Kg/m^3)
Therefore from the above equation, pressure is proportional to density.
P∝ρ
#basics #thermodynamics
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