AIIMS 2018 | Chemical Kinetics Question 4 | Chemistry

The rate constant for the first order decomposition of a certain reaction is described by the equation $$\ln k\left(\mathrm{~s}^{-1}\right)=14.34-\frac{1.25 \times 10^4 \mathrm{~K}}{T}$$. The energy of activation for this reaction is

$$1.26 \times 10^4 \mathrm{~cal} \mathrm{~mol}^{-1}$$

$$4.29 \times 10^4 \mathrm{~cal} \mathrm{~mol}^{-1}$$

$$3.12 \times 10^4 \mathrm{~cal} \mathrm{~mol}^{-1}$$

$$2.50 \times 10^4 \mathrm{~cal} \mathrm{~mol}^{-1}$$

AIIMS 2018

MCQ (Single Correct Answer)

-0.33

Assertion (A) The reaction

$$\begin{aligned} 2 \mathrm{NO}+\mathrm{O}_2 & \longrightarrow 2 \mathrm{NO}_2 \\ \text { and } \quad 2 \mathrm{CO}+\mathrm{O}_2 & \longrightarrow 2 \mathrm{CO}_2 \end{aligned}$$

proceeds at the same rate because they are similar.

Reason (R) Both the reactions have same activation energy.

Both (A) and (R) are true and (R) is the correct explanation of (A).

Both (A) and (R) are true, but (R) is not the correct explanation of (A).

(A) is true and (R) is false.

Both (A) and (R) are false.

AIIMS Subjects

Biology

Botany

Zoology

Human Health and Diseases Body Fluids and Its Circulation Locomotion and Movement Structural Organisation in Animals Digestion and Absorption Excretory Products and Their Elimination Chemical Coordination and Integration Human Reproduction Animal Kingdom Evolution