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AT 300K THE DENSITY OF A CERTAIN GASEOUS MOLECULE AT 2BAR IS DOUBLE TO THAT OF DINITROGEN(N2) AT 4BAR. THE MOLAR MASS OF GASEOUS MOLECULE IS


JASPREET MANKU 25th Nov, 2017
Answers (3)
Purujith Maiya 17th Dec, 2018

P1V1=nRT

P2V2=n'RT

  • n=dV1/M1 (d=density) ..............(1)
  • n'=d'V2/28
  • d=2*d'

(1) becomes

n=2*d'V1/M1;

P1V1=(2*d'V1/M1)*RT .................(2)   {V1 gets cancelled}

P2V2=(d'V2/28)*RT.......................(3)   {V2 gets cancelled}

taking  (2)/(3):

P1/P2=(2/M1)/(1/28)

->2/4=56/M1

->M1=112g mol^(-1)

Raja Mohanty 22nd Nov, 2018

pm=drt

p1= 2

p2= 4   d1= 2d2

m=56

Madhurika Dhoot 17th Jul, 2018

We know

PV=nRT ,

d1=d2,

P1×M1=P2×M2,

2×2m=4×28

m1=28 g mol^-1


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