Question:medium

Which of the following is the slope of the first order reaction in the plot of ln[R] vs. time ?

Show Hint

First order: slope of ln[R] vs. t is always negative.
Updated On: Feb 24, 2026
  • +k
  • $\frac{+k}{2.303}$
  • –k
  • $\frac{–k}{2.303}$
Show Solution

The Correct Option is C

Solution and Explanation

The integrated rate law for a first-order reaction is expressed as:
ln[R] = –kt + ln[R]$_0$
Consequently, the slope obtained from plotting ln[R] against time is –k.
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