NEET Chemistry Order of Reaction MCQ Question
Consider a graph where ln [R] is plotted against time t for a first-order reaction. What does the slope of the line represent in this context?
The negative rate constant, -k.
The natural logarithm of the initial concentration, ln[R]₀.
The activation energy of the reaction.
The temperature dependence of the reaction.
Correct Answer
Detailed Explanation
In a plot of ln [R] versus time for a first-order reaction, the slope of the line is equal to the negative of the rate constant, -k, as per the equation ln[R] = ln[R]₀ - kt.
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