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In a zero-order reaction, the concentration of the reactant decreases uniformly over time. Which of the following statements is true about the graph representing this reaction?

1. In a zero-order reaction, the rate is expressed as k[A]^0, indicating that the rate remains constant regardless of the concentration of 'A'.
2. In a zero-order reaction, the reaction rate does not depend on the concentration of the reactant.
3. The graph is represented as a straight line with a downward slope.
4. The slope of the graph is equal to -k, and the y-intercept corresponds to the initial concentration [C₀].

Correct answer: The graph is represented as a straight line with a downward slope.

Solution

For a zero-order reaction, the rate is independent of the concentration of the reactant, leading to a linear decrease in concentration over time. This results in a straight-line plot with a negative slope.

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