What Is Instantaneous Rate Of Reaction? How Is It Determined?

The instantaneous rate of reaction is defined as the change in concentration of an infinitely small time interval. An instantaneous rate is a rate at some instant in time. The average rate is the average of the instantaneous reaction rate over a period of time during the reaction.

We determine an instantaneous rate at time t: by calculating the negative of the slope of the curve of concentration of a reactant versus time at time t. It can be measured by calculating the slope of the tangent to the graph of concentration vs time.

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