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Chemistry- rate of reaction

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    • Thread Starter

    when doing a graph for the rate of reaction, why do we use 1/t to represent the rate?

    I'm not really too sure, I've always used t! It might be easier to calculate the rate as it will be the area under the graph so you could use integration but that would probably be beyond what you need in Chemistry!

    (Original post by RogueLeader)
    when doing a graph for the rate of reaction, why do we use 1/t to represent the rate?
    Because the 'rate' means the change in some quantity divided by the time.

    The 'rate' of travel of a car (speed) is given by the distance travelled divided by the time.

    So the average rate is given by the extent of a chemical reaction divided by the time.

    If the 'extent' of the reaction is always the same when you are comparing several reactions then the rate of each is proportional to a constant/time.

    Hence, as it is proportional you can forget the constant and call it one.

    So rate is proportional to 1/t
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