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A given sample of N(2)O(4) in a closed v...

A given sample of `N_(2)O_(4)` in a closed vessel shows `20%` dissociation in `NO_(2)` at `27^(@)C` and `760 "torr"`. The sample is now heated upto `127^(@)C` and the analysis of mixture shows `60%` dissociation at `127^(@)C`.
The molecular weight of mixture at `27^(@)C` is :

A

`76.66`

B

`78.69`

C

`66.52`

D

`80.24`

Text Solution

Verified by Experts

`0.8axx92+0.4axx46=1.2axxM` at `300K`
`:. M=76.66`
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