Rate law for the reaction A + 2B → C is found to be

Rate = k [A][B]

Concentration of reactant ‘B’ is doubled, keeping the concentration of ‘A’ constant, the value of rate constant will be______.

A. the same

B. doubled

C. quadrupled

D. halved

For a reaction:

Rate = k

A. Write the order and molecularity of this reaction.

B. Write the unit of k.

Why can’t molecularity of any reaction be equal to zero?

Note: In the following questions a statement of assertion followed by a statement of reason is given. Choose the correct answer out of the following choices.

Assertion : Order and molecularity are same.

Reason : Order is determined experimentally and molecularity is the sum of the stoichiometric coefficient of rate determining elementary step.

Note: In the following questions a statement of assertion followed by a statement of reason is given. Choose the correct answer out of the following choices.

Assertion : Order of the reaction can be zero or fractional.

Reason : We cannot determine order from balanced chemical equation

Match the items of Column I and Column II.

Column I Column II

(i) Mathematical expression for rate of reaction (a) rate constant

(ii) Rate of reaction for zero order reaction is equal to (b) rate law

(iii) Units of rate constant for zero order reaction is same as that of (c) order of slowest step

(iv) Order of a complex reaction is determined by (d) rate of a reaction

How are most probable kinetic energy and the energy of activation affected with increase in temperature.

OR

Explain the difference between instantaneous rate of a reaction and average rate of a reaction.