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The vapour density of undecomposed N2O4 ...

The vapour density of undecomposed `N_2O_4` is 46. When heated vapour density decreases to 24.5 due to its dissociation to `NO_2` WHAT is the percent dissociation of `N_2O_4` at the final stage ?

A

88

B

60

C

40

D

70

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The correct Answer is:
A
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