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Chemical kinetics is based on the rates of change for reactants forming products.

Which of the following is NOT true in the context of chemical kinetics and rates?

Created for Albert.io. Copyright 2016. All rights reserved.

A

An instantaneous rate is determined from the slope of a tangent drawn at any point along a graph of concentration versus time.

B

An average rate is calculated by taking the ratio of the change in concentration to the change in time for a set of rate data.

C

The rate of a reaction is a fixed value regardless of the data points chosen when calculating the overall rate of a reaction.

D

A rate is always positive but can be set as equal to the negative of the concentration of reactants versus time, indicating that the reactant concentrations are decreasing.

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