( CHEMISTRY ) CHEMISTRY-III HARYANA B.Sc Third Semester

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AUTHORS: Dr. Mahesh Kumar , Dr. Neelam , Mrs. Manjeet Rani

ISBN : 978-93-6180-215-7

Syllabus

 

Subject: Chemistry-III

 

Course Code: B23-CHE-301

 

Unit

Topics

Contact

Hours

I

s and p-Block Elements

Salient features of hydrides, oxides, halides, hydroxides of s-block elements (methods of preparation excluded). Structure, preparation and properties of Diborane and Borazine.

Catenation, Carbides, Fluorocarbons, Silicates (structural aspects), structure of Oxides of Nitrogen and Phosphorous, structure of White and Red Phosphorus.

Structure of Oxyacids of Nitrogen, Phosphorous, Sulphur and Chlorine and comparison of acidic strength of Oxyacids. Low chemical reactivity of noble gases, chemistry of Xenon, structure and bonding in Fluorides, Oxides and Oxyfluorides of xenon.

11

II

Electrochemistry-I

Electrolytic conduction, factors affecting electrolytic conduction, specific conductance, molar conductance, equivalent conductance and relation among them, their variation with concentration. Application of Kohlrausch’s Law in calculation of conductance of weak electrolytes at infinite dilution (Numericals). Concepts of pH and pKa, Buffer solution, Buffer action, Henderson – Hazel equation, Buffer mechanism of buffer action.

Electrochemistry-II

Reversible & irreversible cells, Calculation of thermodynamic quantities of cell reaction (▲G, ▲H & K).

Types of reversible electrodes – metal- metal ion, gas electrode, metal – insoluble salt- anion and redox electrodes. Nernst equation, Standard Hydrogen electrode, Reference electrodes, Applications of EMF measurement in solubility product and potentiometric titrations using glass electrode.

11

III

Alkynes

Nomenclature and its structure. Methods of formation: using Calcium carbide, dehydrohalogenation, Kolbe’s electrolysis. Chemical reactions: Mechanism of electrophilic and nucleophilic addition reactions, formation of metal acetylides, addition of bromine and alkaline KMnO4, ozonolysis. Acidity of alkynes.

 

Stereochemistry of Organic Compounds

Concept of isomerism: Structural and Stereoisomerism. Symmetry elements, enantiomers, optical activity, properties of enantiomers, chiral and achiral molecules (up-to 2 asymmetric centres), diastereomers, threo- and erythronomenclature, meso-compounds, Relative and absolute configuration, sequence rules, R and S system of nomenclature. Cis- Trans isomerism, E & Z system of nomenclature, Conformational analysis of ethane and n-butane, conformations of cyclohexane, axial and equatorial bonds. Newman and Sawhorse projection formulae.

11

IV

Benzene and its derivatives:

Nomenclature, Aromatic nucleus and side chain, Huckels’ rule of aromaticity. Aromatic electrophilic substitution, mechanism of nitration, halogenation, sulphonation, and Friedel- Crafts reaction. Energy profile diagrams. Activating, deactivating substituents and orientation.

Alkyl Halides: Nomenclature, methods of formation: from alkenes and alcohol, nucleophilic substitution reactions of alkyl halides, SN2 and SN1 reactions with energy profile diagrams.

Aryl Halides: Methods of formation: halogenation, Sandmeyer reaction. The addition-elimination and the elimination-addition mechanisms of nucleophilic aromatic substitution reactions.

Relative reactivities of alkyl halides vs allyl, vinyl, and aryl halides.

12

V

1. Gravimetriic Analysis: Estimation of Ni2+ as Nidimethylglyoxime and Al3+ as Al-oxinate.

2. Colorimetry: To verify Beer-Lambert law for KMnO4 /K2Cr 2O7 and determine the unknown concentration of the given solution of KMnO4 /K2Cr 2O7 solution.

3. To prepare acidic and basic buffer solutions of pH 5 and 9 respectively.

4. Preparation of Cuprous chloride, tetra ammine cupric sulphate.

5. To determine the CST of phenol-water system.

6. To determine the solubility of Benzoic acid at various temperatures and to determine the ΔH of the dissolution process.

7. To determine the Enthalpy of neutralisation of strong base versus strong acid and weak acid/weak base versus strong base/strong acid and determine the enthalpy of ionisation of the weak acid/weak base.

8. Determine the rate constant of hydrolysis of ethyl acetate.

30

 

KUK/CRSU NEP2020/B.Sc(English)/3/03
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