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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

40

B

10

C

8

D

20

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