According to the collision theory of reaction rates, rate of reaction increases with temperature due to ____.
Greater number of collisions
Greater velocity of the reacting molecules
Greater number of molecules have activation energy
None of the above
The reaction rate at a given temperature becomes slower, then ____.
The free energy of activation is higher
The free energy of activation is lower
The entropy changes
The initial concentration of the reactants remains constant
A rise in temperature increases the velocity of a reaction. It is because it results in ____.
An increased number of molecular collisions
An increased momentum of colliding molecules
An increase in the activation energy
A decrease in the activation energy
The number of collisions depends upon ____.
Pressure
Concentration
Temperature
All of the above
If and are the activation energies of forward and reverse reactions and the reaction is known to be exothermic, then ____.
According to Arrhenius theory, the activation energy is ____.
The energy it should possess so that it can enter into an effective collision
The energy which the molecule should possess in order to undergo reaction
The energy it has to acquire further so that it can enter into a effective collision
The energy gained by the molecules on colliding with another molecule
The minimum energy a molecule should possess in order to enter into a fruitful collision is known as ____.
Reaction energy
Collision energy
Activation energy
Threshold energy
Activation energy is ____.
The amount of energy to be added to the actual energy of a molecule so that the threshold energy is reached
The amount of energy the molecule must contain so that it reacts
The energy which a molecule should have in order to enter into an effective collision
The average kinetic energy of the molecule
The reason for almost doubling the rate of reaction on increasing the temperature of the reaction system by 10oC is ____.
The value of threshold energy increases
Collision frequency increases
The fraction of the molecule having energy equal to threshold energy or more increases
Activation energy decreases
Which of the following plots is in accordance with the Arrhenius equation?