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In a gaseous phase reaction, A2(g)toB(g)...

In a gaseous phase reaction, `A_2(g)toB(g)+1/2C(g)`. The increase in presssure from 100 mm to 110 mm is observed in 5 minute. The rate of disappearance of `A_2` in mm `min^(-1)` is :

A

`4 "mm min"^(-1)`

B

`8 "mm min"^(-1)`

C

`16 "mm min"^(-1)`

D

`2 "mm min"^(-1)`

Text Solution

Verified by Experts

The correct Answer is:
B
`{:(A_(2)(g)rarrB(g)+(1)/(2)C(g)),("P - -"),("P-p p p/2"):}`
Increase in pressure `=(p)/(2)`
Thus, the increase of pressure refers to the increase in concentration if C
Rate of apperance of C `=(120-100)/(5)`
= 4 mm `"min"^(-1)`
Rate of disapperance of `A_(2)=2xx"rate of appearance of C"=2xx"4 mm min"^(-1)="8 mm min"^(-1)`
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