why rate of reaction is always positive or why rate of reaction can not have a negative value
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The concentration of a reactantalways decreases with time, so and are both negative. Sincenegative rates do not make much sense, rates expressed in terms of a reactant concentration are alwayspreceded by a minus sign to make the rate come out positive.
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3
The concentration of a reactantalways decreases with time, so and are both negative. Sincenegative rates do not make much sense, rates expressed in terms of a reactant concentration are alwayspreceded by a minus sign to make the rate come out positive.
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