Collision Theory of Chemical Reaction

IMPORTANT

Collision Theory of Chemical Reaction: Overview

This Topic covers sub-topics such as Collision Frequency, Frequency Factor, Collision Theory of Chemical Reactions, Effective Collisions, Intermediate Complex Theory and, Graphical Representation of Fraction of Molecules versus Kinetic Energy

Important Questions on Collision Theory of Chemical Reaction

HARD
IMPORTANT

At a temperature of T=300 K there are 30% molecules with kinetic energy greater than the activation energy. According to Arrhenius equation, the fraction of the molecules which will have kinetic energy greater than the activation energy at 150 K [Assume that the activation energy is independent of temperature] is

HARD
IMPORTANT

In a reversible reaction, the enthalpy change and the activation energy in the forward direction are respectively x kJ mol-1 and y kJ mol-1. Therefore, the energy of activation in the backward direction is

MEDIUM
IMPORTANT

Collision theory is applicable to 

MEDIUM
IMPORTANT

Collision theory is satisfactory for:-

MEDIUM
IMPORTANT

The activation energy for a reaction at the temperature T K was found to be 2.303RT J mol-1. The ratio of the rate constant to Arrhenius factor is

EASY
IMPORTANT

What is the activation energy of the reaction B→A, if Ea for the reaction AB is 120 kJ/mole of A. The enthalpy of reaction is –140 kJ/mole.

MEDIUM
IMPORTANT

In the potential energy profile, the intermediate species corresponding to point 3, is

MEDIUM
IMPORTANT

The pre-exponential factor for free radical addition of chlorine is 2 × 1013 s1. Figure out the rate constant of this reaction at STP, given R = 8.314 J mol1 K1 ?

HARD
IMPORTANT

Which is correct according to the collision theory of chemical reactions?

EASY
IMPORTANT

Increase in concentration of the reactants can lead to change in:

MEDIUM
IMPORTANT

Statement - 1: If number of gaseous molecules per unit volume are doubled, collision frequency becomes four times of initial. and

Statement - 2:

Collision frequency n= 2 πσ2N2v .

HARD
IMPORTANT

For the equilibrium, AgBg, H-40  kJ/mol. If the ratio of the activation energies of the forward Ef and revers Eb reactions is 23 then:

HARD
IMPORTANT

The molecular diameter of A and  B are 4 nm and 8 nm respectively. The pressure of A and B are 10 atm and 5 atm respectively. The temperature of A and B are 300 K and 400 K respectively. The ratio of molecular mass of A and B are 30 : 40. What will be the ratio of binary collisions among A molecules to that of B molecules ?

MEDIUM
IMPORTANT

Increase in the concentration of the reactants leads to the change in

EASY
IMPORTANT

What istThe minimum energy required for a molecule to take part in a reaction is called?

HARD
IMPORTANT

Collision theory is applicable to which of the following?

MEDIUM
IMPORTANT

Collision theory is applicable to which of the following?

MEDIUM
IMPORTANT

Which of the following statements is under collision theory?

I Rate is directly proportional to collision frequency.

II The rate depends upon the orientation of atoms.

III Temperature determines the rate.

MEDIUM
IMPORTANT

A chemical reaction proceeds the following formula:

k=PZe-Ea/RT

Which of the following processes will increase the rate of reaction?

MEDIUM
IMPORTANT

The rate of reaction increases with temperature due to