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The high temperature decomposition of di...

The high temperature decomposition of dimethyl ether obeys the first order kinetics.
`{:(,(CH_(3))_(2)O,rarr,CH_(4),+,H_(2),+,CO),("Time (sec)",0,,400,,x,,oo),("Total pressure (mm)",312,,468,,585,,y):}`
The values of `(x, y)` missing above are:

A

`x=800, y=936`

B

`x=620, y=624`

C

`x=620, y=936`

D

`x=800, y=624`

Text Solution

Verified by Experts

The correct Answer is:
a
`{:((CH_(3))_(2)O_((g)),rarr,CH_(4(g)),+,H_(2(g)),+,CO_((g))),(a,,0,,0,,0),((a-x),,x,,x,,x):}`
Use `K=2.303/t"log" a/((a-x))`
`(a=312 at t=0, a+2x=468 at t=400 and so on)`
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