Chemical Kinetics

What type of reaction is this?

• Unimolecular elementary

• Pseudo first order

• Zero order

• Second Order

Select the correct diagram for an endothermic reaction that proceeds through two steps, with the second step as rate determining :

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• None of these

The activation energies of the forward and backward reactions in the case of chemical reaction are 30.5KJ/mol and 45.4KJ/mol respectively: The reaction is:

• Exothermic

• Endothermic

• Neither exothermic nor endothermic

• independent of temperature

This means that:

• Rate increases with increase in temperature

• Rate decreases with decrease in temperature

• Rate does not change with rise in temperature

• None of the above

Collision theory is satisfactory for:

• First order reactions

• Zero order reactions

• Bimolecular elementary reaction

• Any order reactions

The reactions of high order are rare because

• many body collisions involve very high activation energy

• many body collisions have a very low probability

• many body collisions are not energetically favoured

• many body collisions can take place in gaseous phase only

• 2

• 1

• 3/2

• 0

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• 100

• 43.44

• 150

• 140