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A gaseous reaction A(2)(g) rarr B(g) + (...

A gaseous reaction `A_(2)(g) rarr B(g) + (1)/(2) C(g)` shows increase in pressure form `100 mm` to `120 mm` in `5 min`. What is the rate of disappearance of `A_(2)` ?

A

`4`

B

`8`

C

`16`

D

`2`

Text Solution

Verified by Experts

The correct Answer is:
b
`A_(2)rarr B(g)+1/2C(g)`
`(-d[A_(2)])/(dt)=(2d[C])/(dt)`
Thus, `(d[C])/(dt)=(120-100)/(5)= 4 mm min^(-1)`
`:. -(d[A_(2)])/(dt)=2xx4 mm min^(-1)`
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