(A) The correct answer is $(A)$. $A$ catalyst increases the rate of both forward and backward reactions equally by providing an alternative reaction p

Name: Exam Paper Generator | JEE NEET Paper Generator | Vedclass
Brand: Vedclass
Rating: 5 (35 reviews)

It provides a new reaction path of lower activation energy.

(A) The correct answer is $(A)$. $A$ catalyst increases the rate of both forward and backward reactions equally by providing an alternative reaction pathway with a lower activation energy. As a result,the system reaches the state of equilibrium more quickly. It does not change the position of the equilibrium or the equilibrium constant.

Class 12 Chemistry Chemical Kinetics Collision theory, Energy of activation and Arrhenius equation

Easy

Regarding the velocity in a reversible reaction,which is the correct explanation of the effect of a catalyst?

A
It provides a new reaction path of lower activation energy.
B
It increases the kinetic energy of reacting molecules.
C
It displaces the equilibrium state to the right side.
D
It decreases the velocity of the backward reaction.

Explore More

Browse All

Question Bank

All Subjects

Class 12 Questions

Class 12

Chemistry Questions

Chapter

Chemical Kinetics

Subtopic

Collision theory, Energy of activation and Arrhenius equation

In a first order reaction at $27\,^oC$ and $47\,^oC$,$50\%$ of the reaction is complete in $30\,\min$ and $10\,\min$ respectively. Calculate the energy of activation $(E_a)$.

Medium

View Solution

Which scientist explained that all the species taking part in a reaction do not possess the same kinetic energy?

Easy

View Solution

$A$ chemical reaction was carried out at $300 \, K$ and $280 \, K$. The rate constants were found to be $K_1$ and $K_2$ respectively. The energy of activation is $1.157 \times 10^4 \, cal \, mol^{-1}$ and $R = 1.987 \, cal \, K^{-1} \, mol^{-1}$. Then:

Medium

View Solution

The activation energy of a reaction can be determined from the slope of which of the following graphs?

MediumNEET 2015

View Solution

The reaction: $Cr_{2}O_{3} + 2 Al \rightarrow Al_{2}O_{3} + 2 Cr$ $\quad (\Delta_{r}G^{\Theta} = -421 \ kJ)$ is thermodynamically feasible as is apparent from the Gibbs energy value. Why does it not take place at room temperature?

Medium

View Solution

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

Regarding the velocity in a reversible reaction,which is the correct explanation of the effect of a catalyst?

Similar Questions

In a first order reaction at $27\,^oC$ and $47\,^oC$,$50\%$ of the reaction is complete in $30\,\min$ and $10\,\min$ respectively. Calculate the energy of activation $(E_a)$.

Which scientist explained that all the species taking part in a reaction do not possess the same kinetic energy?

$A$ chemical reaction was carried out at $300 \, K$ and $280 \, K$. The rate constants were found to be $K_1$ and $K_2$ respectively. The energy of activation is $1.157 \times 10^4 \, cal \, mol^{-1}$ and $R = 1.987 \, cal \, K^{-1} \, mol^{-1}$. Then:

The activation energy of a reaction can be determined from the slope of which of the following graphs?

The reaction: $Cr_{2}O_{3} + 2 Al \rightarrow Al_{2}O_{3} + 2 Cr$ $\quad (\Delta_{r}G^{\Theta} = -421 \ kJ)$ is thermodynamically feasible as is apparent from the Gibbs energy value. Why does it not take place at room temperature?

Vedclass Test Series

Exam Paper Generator

Online Exam Module