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For a reaction of the type \(Aa+bB\right...

For a reaction of the type \(Aa+bB\rightarrow products\), \(-\frac{d[A]}{dt}\) is equal to
(A) \(\frac{-d[B]}{dt}\)
(B) \(\frac{-b}{d}\frac{d[B]}{dt}\)
(C) \(\frac{-a}{b}\frac{d[B]}{dt}\)
(D) \(\frac{-b}{a}\frac{d[B]}{dt}\)

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