Q.

Dimethyl ether decomposes as CH3OCH3(g)⟶CH4(g)+CO(g)+H2(g) When CH3OCH3, decomposes to 20% extent at certain fixed conditions, what is the ratio of diffusion of pure CH3OCH3 with methane?

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a

0.59 : 1

b

1.18 : 1

c

2.36 : 7

d

1.77 :7

answer is C.

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Detailed Solution

CH3OCH3(g)→CH4(g)+CO(g)+H2(g)  Initial press.:   1                     0          at euilibrium:  1-x                 x                      1-0.2               0.2   ∵x=20% = 0.2rCH3OCH3rCH4=MCH4MCH3OCH3×PCH3OCH3PCH4=1646×0.80.2=2.36:1
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