Download Class 12 Chemistry Full Study Material For Boards Revision in PDF format. All Revision notes for Class 12 Chemistry have been designed as per the latest syllabus and updated chapters given in your textbook for Chemistry in Class 12. Our teachers have designed these concept notes for the benefit of Class 12 students. You should use these chapter wise notes for revision on daily basis. These study notes can also be used for learning each chapter and its important and difficult topics or revision just before your exams to help you get better scores in upcoming examinations, You can also use Printable notes for Class 12 Chemistry for faster revision of difficult topics and get higher rank. After reading these notes also refer to MCQ questions for Class 12 Chemistry given on studiestoday
Revision Notes for Class 12 Chemistry All topics
Class 12 Chemistry students should refer to the following concepts and notes for All topics in Class 12. These exam notes for Class 12 Chemistry will be very useful for upcoming class tests and examinations and help you to score good marks
All topics Notes Class 12 Chemistry
7. Elevation in boiling point (ΔTb)
ΔTb = i.Kb m
where ΔTb = Tb – Tb°
Kb = molal boiling point elevation constant
m = molality of solution.
8. Depression in freezing point (ΔTf)
ΔTf = i.Kf m
where ΔTf = Tf° – Tf
Kf = molal depression constant
m = molality of solution.
9. Osmotic pressure (π) of a solution
πV = inRT or π = i CRT
where π = osmotic pressure in bar or atm
V = volume in litres
i = Van't Hoff factor
c = molar concentration in moles per litres
n = number of moles
T = Temperature on Kelvin Scale
R = 0.083 L bar mol–1 K–1
R = 0.0821 L atm mol–1 K–1
10. Van't Hoff factor (i)
i = Observed colligative property / Theoretically calculated colligative property
i = Normal molar mass / Abnormal molar mass
{i > 1 For dissociation of molecules
{i < 1 For association of molecules
{i= 1 For ideal solution
11. Relationship between relative lowering in vapour prescure and elevation in b.p.
Δb/pA°=(ixΔTb/Kb)MAx1000
Here
Δp is lowering in vapour pressure, pA° is vapour pressure of pure solvent, i is van't Hoff factor, ΔTb is elevation in boiling point, Kb is molal elevation constant and MA is molar mass of solvent
Electrochemistry
1. Conductivity (k)
K = 1 /P= 1/R =l/A= G G*/A
Where R is resistance, l/A = cell constant (G*) and 1/P is resistivity.
2. Relationship between k and Am
Am = 1000 kxc
Where m L is molar conductance, k is conductivity and C is molar concentration.
Kohlrausch’s law
(a) In general if an electrolyte on dissociation gives ν+ cations and γ– anions then, its limiting molar conductivity is given by
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CBSE Class 12 Chemistry All topics Notes
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Notes for Chemistry CBSE Class 12 All topics
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All topics Notes for Chemistry CBSE Class 12
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All topics CBSE Class 12 Chemistry Notes
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Notes for CBSE Chemistry Class 12 All topics
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