Provide the graphs for a first-order reaction and explain the information obtained from them.

Vedclass pdf generator app on play store
Vedclass iOS app on app store
(N/A) The integrated rate equations for a first-order reaction are as follows:
$1. \ln [R] = -k(t) + \ln [R]_0$
$2. \log [R] = -\frac{k}{2.303}(t) + \log [R]_0$
These equations follow the straight-line form $y = mx + c$. Thus,the plots of $\ln [R]$ versus $t$ and $\log [R]$ versus $t$ are straight lines with a negative slope and a positive intercept on the $Y$-axis.
- For the plot of $\ln [R]$ vs $t$: The slope is $-k$ and the intercept is $\ln [R]_0$.
- For the plot of $\log [R]$ vs $t$: The slope is $-\frac{k}{2.303}$ and the intercept is $\log [R]_0$.
Additionally,based on the integrated rate equation $\log \frac{[R]_0}{[R]} = \frac{k}{2.303}(t)$,the plot of $\log \frac{[R]_0}{[R]}$ versus $t$ is a straight line passing through the origin $(0, 0)$ with a slope of $\frac{k}{2.303}$.

Explore More

Similar Questions

Which is the correct relation between rate constant and half-life of a first-order reaction?

The first order reaction $A_{(g)} \rightarrow B_{(g)} + 2C_{(g)}$ occurs at $25^{\circ} C$. After $24 \ min$,the ratio of the concentration of products to the concentration of the reactant is $1:3$. What is the half-life of the reaction (in $min$)? $(\log 1.11 = 0.046)$

Decomposition of $H_2O_2$ follows a first order reaction. In $50 \ min$,the concentration of $H_2O_2$ decreases from $0.5 \ M$ to $0.125 \ M$. For such decomposition,when the concentration of $H_2O_2$ reaches $0.05 \ M$,the rate of formation of $O_2$ will be:

For a first-order gas-phase reaction $A(g) \to B(g) + C(g)$, let $p_i$ be the initial pressure of gas $A$ and $p_t$ be the total pressure of the reaction mixture at time $t$. The expression for the rate constant $(k)$ is:

The half-life period of a first order reaction is $15 \ minutes$. The amount of substance left after one hour will be

Vedclass Products

For Students

Vedclass Test Series

Mock tests in real JEE/NEET style with performance analysis. 5-day free trial.

Start Free Trial
For Teachers

Exam Paper Generator

Generate Set A/B/C/D exam papers from 7.5L+ questions in 2 minutes. 3 chapters free.

Try Free
For Institutes

Online Exam Module

Live online exams with unlimited students, 360° analytics & white-label branding.

See Demo