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Question

The graph drawn between pressure and volume in Boyle's law experiment is shown in figure for two different gases. If the same amount of both the gases has been taken, then the relationship between their molecular weights will be


24868_bacffcfbe6e540e2a934abbde6e1d451.png
  1. M2<M1
  2. M1<M2
  3. M1=M2
  4. M31=M2

A
M31=M2
B
M2<M1
C
M1<M2
D
M1=M2
Solution
Verified by Toppr

From ideal gas equation, PV=nRT

And, n=wM where M is the molecular weight of the gas

Now, PV=wMRT

So, we draw a vertical line at a volume say V0.

Then for this volume, we see that pressure is higher for the gas with molecular weight M2 (from the graph) hence, this means that M2 must be smaller than M1.

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