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For a first order reaction $A\rightarrow 2B$ ,graph for $\large\frac{d[B]}{dt}$ vs $\large\frac{-d[A]}{dt}$ is

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Answer: (D)
Given $A\rightarrow 2B \rightarrow -\large\frac{d[A]}{dt}=\frac{1}{2}\frac{d[B]}{dt}$
In this case the y-axis is $\large \frac{d[B]}{dt}$ and the x-axis is $-\large\frac{d[A]}{dt}$, so this is a line in the form of $y -2x =0$. Graph (D) is the right graph that represents this among the four choices.
answered Dec 16, 2013 by sreemathi.v
edited Jul 26, 2014 by balaji.thirumalai

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