Tag: 12 Class Chemistry
Class 12 Chemistry Notes – Chemical Reactions of Alcohols
Dehydration of alcohol:-
Regent used is concentrated H2SO4 Δ. It proceeds via carbocation intermediate
Mechanism:-
(i) Electrophilic attack of
(ii) Formation of intermediate:-
(iii) Removal of proton to give...
Class 12 Chemistry Notes – Methods of preparation of Alcohols
From Haloalkanes:-
When HaloAlkanes (alkyl halides) are heated with aqueous sodium or Potassium Hydroxide, they forms alcohols
From Alkenes:-
Alcohols can be produced from Alkenes by their...
CBSE Class 12 Chemistry Notes: Chemical Kinetics – Arrhenius Equations
The effect of temperature on rate is given by Arrhenius law
k = A.e–E/RT K = rate constant
E = Activation energy
R = Gas constant
T =...
CBSE Class 12 Chemistry Notes: Chemical Kinetics – Order of Reaction
Rate equation is given by law of mass action for a chemical reaction, The sum of the exponents by which the concentration terms are...
CBSE Class 12 Chemistry Notes: Chemical Kinetics – Collision Theory of Rate of Reaction
Important Definitions:
Active Molecules:
Those molecules which attain the minimum energy required for a chemical reaction.
Activation Energy:
Minimum amount of energy required by a reactant molecule to...
CBSE Class 12 Chemistry Notes: Chemical Kinetics – Dehydration of Oxalic Acid & Hydrolysis...
Dehydration of oxalic acid
In the presence of concentrated H2SO4, oxalic acid undergoes dehydration as follows:
Like H2O2, the amount of oxalic acid present at any...
CBSE Class 12 Chemistry Notes: Chemical Kinetics – Dehydration of Oxalic Acid & Hydrolysis...
Dehydration of oxalic acid
In the presence of concentrated H2SO4, oxalic acid undergoes dehydration as follows:
Like H2O2, the amount of oxalic acid present at any...
CBSE Class 12 Chemistry Notes: Chemical Kinetics – Half Life
Half life of first order:
Time required to consume the half of initial concentration of reactant is called half life period.
At half life time:
Thus half...
CBSE Class 12 Chemistry Notes: Chemical Kinetics – Rate Law and Molecularity
RATE LAW
It is a mathematical expression which relates rate of reaction with concentration It can be derived only by performing experiments.
R = k 2
k...
Class 12 Chemistry Notes – Isomerism In Monohydric Alcohols
There are following structural isomerism in alcohols
I. Chain isomerism:-
Isomerism due to difference in number of atoms in primary chain of carbon atoms.
II. Position isomerism:-
III....
