AP EAPCET 19-Aug-2021 Shift 1 Paper

For an ideal gas, pV=nRT ...(i)
Here, p= pressure, V= volume of gas
n= moles, R= rate constant
T= temperature
pV=RT (For 1 mole)
V=

RT

p

...(ii)
Now, density is given by D=

M

V

Put value of (ii) in density,
we get, D=

M

RT∕p

⇒D=

pM

RT