The rate of the chemical reaction doubles for an increase of $10 \, K$ in absolute temperature from $298 \, K$. Calculate $E_{a}$.

Vedclass pdf generator app on play store
Vedclass iOS app on app store
(N/A) Given: $T_{1} = 298 \, K$,$T_{2} = 308 \, K$,$k_{2} = 2k_{1}$,$R = 8.314 \, J \, K^{-1} \, mol^{-1}$.
Using the Arrhenius equation: $\log \frac{k_{2}}{k_{1}} = \frac{E_{a}}{2.303 \, R} \left[ \frac{T_{2} - T_{1}}{T_{1} T_{2}} \right]$.
Substituting the values: $\log 2 = \frac{E_{a}}{2.303 \times 8.314} \left[ \frac{10}{298 \times 308} \right]$.
Solving for $E_{a}$: $E_{a} = \frac{0.3010 \times 2.303 \times 8.314 \times 298 \times 308}{10}$.
$E_{a} \approx 52897.78 \, J \, mol^{-1} = 52.9 \, kJ \, mol^{-1}$.

Explore More

Similar Questions

The rate of a reaction quadruples when the temperature changes from $300 \, K$ to $310 \, K$. The activation energy of this reaction is ........... $kJ \, mol^{-1}$ (Assume activation energy and pre-exponential factor are independent of temperature; $\ln 2 = 0.693$; $R = 8.314 \, J \, mol^{-1} \, K^{-1}$)

Which of the following plots gives the value of activation energy?

In the Arrhenius equation,the fraction of molecules having energy equal to or greater than the activation energy at a given temperature is represented by .....

$A$ reaction with low activation energy is always...............

Write the logarithmic form of the Arrhenius equation $k = A e^{-\frac{E_a}{RT}}$.

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