Question:

A plot between concentration of reactant [R] and time ‘t’ is shown below. Which of the given order of reaction is indicated by the graph?
concentration of reactant [R] and time

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For zero-order reactions, the concentration decreases at a constant rate, leading to a linear decrease when plotted.
Updated On: Jul 11, 2025
  • Third order
  • Second order
  • First order
  • Zero order
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The Correct Option is D

Solution and Explanation

In a zero-order reaction, the concentration of the reactant decreases linearly with time, and the plot of [R] vs. time gives a straight line with a negative slope. This is shown in the given graph.
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