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______.

(i) the same (ii) doubled (iii) quadrupled (iv) halved

Which of the following statements is not correct about order of a reaction.

(i) The order of a reaction can be a fractional number.

(ii) Order of a reaction is experimentally determined quantity.

(iii) The order of a reaction is always equal to the sum of the stoichiometric coefficients of reactants in the balanced chemical equation for a reaction.

(iv) The order of a reaction is the sum of the powers of molar concentration of the reactants in the rate law expression

The role of a catalyst is to change ______________.

(i) gibbs energy of reaction. (ii) enthalpy of reaction. (iii) activation energy of reaction. (iv) equilibrium constant

The unit of rate constant of a first order reaction is........

Write two examples of  zero order reactions?

All collisions between reactant species do not lead to th formation of products.why

How did you determine the order of a complex reaction ?

The equation which gives relation between temperature and rateconstant is ...........

1) Find out the order of the reaction from the following rate equation ,R=K [A][B]² 

2) What is the unit of rate constant

Distinguish between order and molecularity?

Molecularity greater than three is very rare why?

What is a zero order reaction ? Give an example?

The rate determining step of a complex reaction is ...........................

The rate constant of a reaction is doubled when the temperature is increased from 27⁰C to 37⁰C.Calculate its activation energy?

Half life of a firstorder reaction is 10s. Calculate its rate constant?

What is half life period? Show that half life of a first order reaction does not depends on the initial concentration?

A first order reaction is 90% completed in 20minutes .calculate the rate constant of the reaction?

In a reaction A+B-----> C, the rate is doubled when the concentration of A is doubled and the rate is increased to four times when the concentration of B is doubled.Find the rate law and also the order of the reaction?

A certain reaction is second order withrepect to the reactant A and first order with respect to B.

1) write the rate equation?

2) what is the overall order?

3) what happens to rate if concentration of both A and B are doubled?

If units of rate and rateconstants are same, then order of the reaction is ...............

How does the catalyst increase the rate of a chemical reaction?

Ester hyrolysis in acid medium is a pseudofirst order reaction .Justify?

Order of radioactive disintegration is

      (a)  Zero                    (b) First                  (c) Second                    (d)  Third

A catalyst increases the rate of a chemical reaction by

      (a)  increasing the activation energy      (b)  decreasing the activation energy     

      (c)  reacting with reactants                     (d)  reacting with products     

The substance with initial concentration of  ‘a’ mole L ^{– 1} proceeds according to zero order kinetics.

The time it takes for the completion of the reaction is ( k = rate constant).

      (a)  k / a                          (b)  a / k                       (c)   k / 2a                   (d)  a / 2k

For the reaction 2 A +  B    →  3 C  +  D, which of the following does not express the reaction rate?

     (a) d[D] / dt               (b) – d[A] / 2dt        (c)  –  d[C] / 3dt          (d)   – d[B] / dt