For a reaction, `1/2Ararr 2B` rate of disappearance of A is related to the rate of appearance of B by the expression

Options

A. `-(d[A])/(dt)=4(d[B])/(dt)`
B. `=(d[A])/(dt)=1/2(d[B])/(dt)`
C. `-(d[A])/(dt)=1/4(d[B])/(dt)`
D. `-(d[A])/(dt)=(d[B])/(dt)`

Answer

C

Explanation

For this reaction,
Rate=`-(1)/(1//2)(d[A])/(dt)-1/2(d[B])/(dt)implies=(d[A])/(dt)=1/4(d[B])/(dt)`