Explain how the rate of reaction depends on concentration and time using graphs.

Vedclass pdf generator app on play store
Vedclass iOS app on app store
(N/A) The rate of a reaction depends on the change in concentration of reactants or products over a specific time interval. This is illustrated by the following graphs:
| Feature | Reactant Concentration vs Time | Product Concentration vs Time |
| :--- | :--- | :--- |
| Average Rate $(R_{av})$ | $R_{av} = -\frac{\Delta[R]}{\Delta t} = -\frac{[R_2] - [R_1]}{t_2 - t_1}$ | $R_{av} = \frac{\Delta[P]}{\Delta t} = \frac{[P_2] - [P_1]}{t_2 - t_1}$ |
| Concentration Trend | Decreases with time | Increases with time |
| Slope | Negative | Positive |
| Initial State | Intercept = $[R]_0$ (Maximum) | Intercept = $0$ (Zero) |
As shown in the graphs,the rate of reaction is determined by the slope of the tangent to the curve at any given time $t$ $(r_{inst} = \pm \frac{d[concentration]}{dt})$.

Explore More

Similar Questions

Consider the reaction,$2 NO_{2(g)} \rightarrow 2 NO_{(g)} + O_{2(g)}$. In the figure below,identify the curves $X, Y$ and $Z$ associated with the three species in the reaction.

For the reaction,$3 I^{-} + S_2 O_8^{2-} \rightarrow I_3^{-} + 2 SO_4^{2-}$,at a particular time $t$,$\frac{d[SO_4^{2-}]}{dt}$ is $2.2 \times 10^{-2} \ mol \ dm^{-3} \ s^{-1}$. What is the value of $-\frac{d[I^{-}]}{dt}$?

The concentration of a reactant changes from $0.1 \, mol \, L^{-1}$ to $0.095 \, mol \, L^{-1}$ in $10 \, s$. Calculate the rate of reaction.

Identify the correct expression for the rate of the following reaction: $2 N_2 O_{5(g)} \rightarrow 4 NO_{2(g)} + O_{2(g)}$

An indicator '$X$' is used for studying the effect of variation in concentration of iodide on the rate of reaction of iodide ion with $H_2O_2$ at room temperature. The indicator '$X$' forms a blue-colored complex with compound '$A$' present in the solution. The indicator '$X$' and compound '$A$' respectively are:

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