Question

PV=nRT show how the density of a vapor may be determined by this method

Answer 1

d = PM / RT

Step-by-step explanation:

Density can be measure from,

PV = nRT

in this equation

P = pressure

V = volume

n = number of moles

R = general gas constant

T = temperature

It is known that,

number of moles = mass/ molar mass

n = m/M

We will put the n= m/M in PV= nRT

PV = m/M ×RT ......... (1)

density = mass/volume

d= m/v

By rearranging equation (1)

P V/m = RT/M

P = m/V×RT/M

P = dRT/M

d = PM / RT