Question: Which of the following is the correct expression for the rate of a reaction?

Options

A : frac{Moles , of , product , formed}{Volume , of , fluid×Time}

B : frac{Moles , of , reactant , initially , taken}{Volume , of , fluid×Time}

C : frac{Moles , unreacted}{Volume , of , fluid×Time}

D : frac{Moles , of , product , formed}{Volume , of , fluid}

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