Chemical Kinetics Chemistry - Chemical Kinetics

Used to express velocity at any instant of time :

Write the order of natural and artificial nuclear (radioactive) decay?

Write the unit of rate constant for zero order reaction.

If two different reactions are carried out at the same temperature and the activation energy for both is also same, then will the rates of these reactions also be the same?

Why does the sugar powder dissolves faster than sugar crystals in a jar?

Explain three differences between the rate constant of reaction and rate of a reaction.

If the value of rate constants are same for three reactions whose orders are 1,2 , and 3 , then what will be the order of the rates of these reactions if the value of concentration is 1 M , less than 1 M and more than 1 M ?

(a) The molecularity of the slow term of a complex reaction is the molecularity of entire reaction. Explain.
(b) High order reactions generally do not occur, why?

Determine the formula for the half life of a first order reaction and prove that the half life of a first order reaction does not depends on the initial concentration of the reactant.

Differentiate between order and molecularity of a reaction.

A reaction is first order in A and second order in B.
(i) Write the differential rate equation.
(ii) How is the rate affected on increasing the concentration of B three times?
(iii) How is the rate affected when the concentration of both A and B are doubled?

Derive the equation required for finding the activation energy.

Explain the energy distribution curve of gaseous molecules and also discuss the effect of temperature on it.

Explain the various methods of determining the order of a reaction.

Mention the factors that affect the rate of a chemical reaction.

The rate constant for the decomposition of hydrocarbons is 2.418 × 10^-5 s^-1 at 546 K. If the energy of activation is 179.9 kJ/mol. What will be the value of pre-exponential factor?

The kinetic energy of maximum fraction of reactant molecules is called _____________ .

The concentration of a reactant decreases from 20 mol to 10 mol or from 10 mol to 5 mol . There will be  _____________ time for both.

In half-life, the concentration of reactions have remained _____________ .

Value of activation energy _____________in the presence of catalyst.

The speed of activation energy _____________ in the presence of catalyst.