NEET Chemistry Order of Reaction MCQ Question
Consider a plot of ln[R] versus time for a first-order reaction, as described in the NCERT textbook. Which of the following statements about the plot is correct?
The slope of the line is equal to -k, where k is the rate constant.
The intercept of the line is equal to the concentration of the reactant at time t.
The plot is a parabola indicating a second-order reaction.
The slope of the line is equal to k, where k is the rate constant.
Correct Answer
Detailed Explanation
For a first-order reaction, plotting ln[R] versus time yields a straight line with a slope of -k and an intercept of ln[R]0. This is derived from the equation ln[R] = -kt + ln[R]0, as explained in the NCERT context.
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