NEET Chemistry Rate of Reaction MCQ Question
Consider a graph where the x-axis represents time and the y-axis represents the natural logarithm of the concentration of a reactant [R] for a first-order reaction. Which statement correctly describes the relationship between the slope of this graph and the rate constant (k) of the reaction?
The slope is equal to -k.
The slope is equal to 2.303k.
The slope is equal to 1/k.
The slope is equal to k.
Correct Answer
Detailed Explanation
For a first-order reaction, the plot of ln[R] versus time is a straight line with a slope equal to -k, as per the NCERT context that describes ln[R] versus time plots for first-order reactions.
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