Question

the density of a gas was found to be 5.5 gram per litre at 2 bar pressure and at 25 degree Celsius calculate its molar mass.are equal to 0.083 litre bar per kelvin per mole

Answer 1

Answer:

Ideal Gas Equation = PM = dRT

Here.

P = Pressure, M = Molecular Mass, d = Density, R = Gas constant, T = temperature

We are given values of P, d, R, T. We are asked to find the value of M.

PM = dRT

=> M = dRT / P

T = 25 degrees Celsius which must be 298 K

Substituting the given values we get,

=> M = 5.5 × 0.083 × 298 / 2

=> M = 136.037 / 2

=> M = 68.0185 which is approximately 68 g

Hence the molecular mass or molar mass of the substance is 68.0185 g.

Hope it helped !