chem302

Chemistry

Medium Exam Preparation: Unknown
Subject Code Che . 202
Credit Hours 5 Hours
Nature Theory + Practical
Full Marks 75 + 25
Pass Marks 30 + 10
Description

Objective

Course Contents

Volumetric Analysis

8 Hours

Introduction to gravimetric analysis, volumetric analysis and equivalent weight, Relationship between equivalent weight, atomic weight and valency, Equivalent weight of compounds (acid, base, salt, oxidizing and reducing agents), Concentration of solution and its units in terms of : Percentage, g/L, molarity, molality, normality and formality, ppm and ppb, Primary and secondary standard substances, Law of equivalence and normality equation, Titration and its types: Acid-base titration, redox titration (related numerical problems)

Ionic Equilibrium

10 Hours

Introduction to Acids and Bases, Limitation of Arrhenius concepts of acids and bases, Bronsted –Lowry definition of acids and bases, Relative strength of acids and bases, Conjugate acid –base pairs, Lewis definition of acids and bases, Ionization of weak electrolyte (Ostwald's dilution law), Ionic product of water (Kw), Dissociation constant of acid and base, (Ka & Kb), Concept of pKa and pKb, pH value: pH of strong and weak acids, pH of strong and weak bases, Solubility and solubility product principle, Common Ion effect, Application of solubility product principle and common ion effect in precipitation reactions, Buffer solution and its application, Indicators and selection of indicators in acid base titration, Types of salts: Acidic salts, basic salts, simple salts, complex salts (introduction and examples), Hydrolysis of salts: Salts of strong acid and strong base, Salts of weak acid and strong base, Salts of weak base and strong acid (solving related numerical problems)

Chemical Kinetics

7 Hours

Introduction, Rate of reactions: Average and instantaneous rate of reactions, Rate law and its expressions, Rate constant and its unit and significance, Order and molecularity, Integrated rate equation for zero and first order reaction, Half-life of zero and first order reactions, Collision theory, concept of activation energy and activated complex, Factors affecting rate of reactions: Effect of concentration, temperature (Arrhenius Equation) and effect of catalyst (energy profile diagram), Catalysis and types of catalysis: homogeneous, heterogeneous and enzyme catalysis (solving related numerical problems based on rate, rate constant and order of zero and first order reactions)

Thermodynamics

8 Hours

Introduction, Energy in chemical reactions, Internal energy, First law of thermodynamics, Enthalpy and enthalpy changes: Endothermic and exothermic processes, Enthalpy of reaction, enthalpy of solution, enthalpy of formation, enthalpy of combustion, Laws of thermochemistry (Laplace Law and Hess’s law), Entropy and spontaneity, Second law of thermodynamics, Gibbs' free energy and prediction of spontaneity, Relationship between $\Delta G$ and equilibrium constant (Solving related numerical problems)

Electrochemistry

7 Hours

Electrode potential and standard electrode potential, Types of electrodes: Standard hydrogen electrode and calomel electrodes, Electrochemical series and its applications, Voltaic cell: Zn-Cu cell, Ag-Cu cell, Cell potential and standard cell potential, Relationship between cell potential and free energy, Commercial batteries and fuel cells (hydrogen/oxygen)

Transition Metals

5 Hours

Introduction, Characteristics of transition metals, Oxidation states of transition metals, Complex ions and metal complexes, Shapes of complex ions, d-orbitals in complex ions (simple explanation by crystal field theory) for octahedral complex, Reasons for the colour of transition metal compounds, Catalytic properties of transition metals

Studies of Heavy Metals

15 Hours

Copper: Occurrence and extraction of copper from copper pyrite, Properties and uses of copper, Chemistry (preparation, properties and uses) of blue vitriol, Other compounds of copper (red oxide and black oxide of copper) formula and uses only, Zinc: Occurrence and extraction of zinc from zinc blende, Properties and uses of zinc, Chemistry (preparation, properties and uses) of white vitriol, Mercury: Occurrence and extraction of mercury from cinnabar, Properties of mercury, Chemistry (preparation, properties and uses) of calomel and corrosive sublimate, Iron: Occurrence and extraction of iron, Properties and uses of iron, Manufacture of steel by Basic Oxygen Method and Open Hearth Process, Corrosion of iron and its prevention, Silver: Occurrence and extraction of silver by cyanide process, Preparation and uses of silver chloride and silver nitrate

Laboratory Works