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Important Points About Order of Reaction is considered one the most difficult concept.
40 Questions around this concept.
For the reaction rate is given by
then the order of the reaction is
Consider the reaction :
The rate of reaction for this reaction is
Rate =
Which of these mechanism is/are consistent with this rate equation ?
What is the order of a chemical reaction if the rate depends on the concentration of single reactant raised to the power of ?
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During the course of a first order chemical reaction, the rate of a reaction
Which among the following will be the unit of rate constant for a homogeneous elementary reaction, A + B → C
For a chemical reaction A + B Product, the order is 1 with respect to A and B.
What is the value of x and y?
Consider an elementary reaction . If the concentration of
is tripled, how will the rate of the reaction change?
Identify the correct statement for a chemical reaction 2A → 3B,
If the time for half reaction gets doubled on doubling the initial concentration of the reactants, which among the following is the order of the reaction -
At particular concentration, the half life of the reaction is 200 minutes. When the concentration of the reactant become double half life becomes, 50 minutes, then what among the following will be the order of the reaction?
Order of reaction is defined as the number of reactants which determine the rate of reaction. In other words, it is the sum of exponents raised on active masses of reactants in a rate law equation.
Let us consider this reaction
Rate law equation for the reaction can be given as:
Rate constant and order for various reacting species is an experimental finding and cannot be predicted directly from the stoichiometry of the balanced reaction.
It is an experimental value.
It may be zero, negative or in fraction.
Order of reaction depends upon temperature, pressure and concentration etc.
It determines rate of reaction.
Order of reaction is determined by the slowest step of the reaction.
High order reactions are rare due to less chance of effective collisions between molecules.
Anything in excess is not counted in order of the reaction. Example, in hydrolysis of ester and sugar water is in excess so it is neglected for order.
Consider the reaction:
The rate law for this reaction is given as follows:
Now, x and y are the coefficients that are determined experimentally.
K = Rate constant
x,y = Order of reaction with respect to A and B.
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