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Electrochemistry for Class 12 Chemistry CBSE


Introduction to Electrochemistry

Electrochemical Cells

Galvanic Cells

Nernst Equation and Its Applications

Electrochemical Series

Conductance of Electrolytic Solutions

Electrolytic Cells and Electrolysis

Faraday’s Laws of Electrolysis

Batteries - Primary and Secondary

Fuel Cells

Corrosion

Electrolytic Conductance and Molar Conductivity

Kohlrausch’s Law of Independent Migration of Ions

Variation of Conductivity with Concentration

Electrochemical Cells and Gibbs Energy

Applications of Electrochemical Cells

Numerical Problems

MCQ-Set

Q 1: Calculate the relative lowering of vapour pressure when 12g urea is dissolved in 90g of water?(Mol weight of urea :60 g/mol)





Q 2: 30 g of urea is dissolved in 846 g of water. Calculate the vapour pressure of water for this solution if vapour pressure of pure water at 298 K is 23.8 mm Hg.(Mol weight of urea :60 g/mol)





Q 3: What is the vapour pressure at 298K of a 20% solution of KNO3 by mass. Vapour pressure of water at 298K is 3.52kPa.(Molar mass of KNO₃ = 101 g/mol)




Click here for Explanation

cccccccccccccccccccccc


Q 4: If ethanol and chloroform are present in a molar ratio of 2:3 then what is the vapor pressure at 20° C if vapor pressures of pure liquids are 5.95 kPa and 21.17 kPa, respectively.




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Concept used Dalton's laws of totatl pressure