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  1. At 10° C the value of the density of a fixed mass of an ideal gas divided by its pressure is x. At 110°C this ratio is:
    1. X
    2. 383
      x
      283
    3. 10
      x
      110
    4. 283
      x
      383
Correct Option: D

Let the mass of the gas be m.
At a fixed temperature and pressure, volume is fixed.

Density of the gas, ρ =
m
V

Now
ρ
=
m
=
m
PPVnRT

m
= x(By question)
nRT

⇒ xT = constant ⇒ x1T1 = x2TB
⇒ x2
x1T1
=
283
x
T2383

T1 = 283K
T2 = 383K



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