CHEMISTRY

CH 121                                                                                                 No. of hrs/week = 03 + 03

                                                                                    No. of credits  = 04

 

1.       Specific gravity- Density of solids, liquids and gases. Viscosity of liquids-measurement-Ostwald viscometer. Surface tension of liquids- measurement. Problems.

2.      Concentrations of solution- weight-weight-units-percent composition, mole fraction, mole ratio, molality. Weight volume units-molarity, normality. Problems.

3.      Binary liquid solutions- Raoults Law- Ideal and non-ideal solutions – solutions of non-volatile solute in liquids. Colligative properties-lowering of vapour pressure, elevation of boiling point, depression of freezing point and osmotic pressure. Solutions of gases in liquid - Henry’s law. Problems.

4.      Ionic equilibria- dissociation constant – Oswald’s dilution law. Ionic product of water. Hydrolysis of salts of four types – hydrolysis constants, degree of hydrolysis. Common ion effect, solubility of sparingly soluble salts- solubility product. Redox and Non-Redox reactions. Balancing redox reactions. Problems.

5.      Acid-base theories- pH-Value- Buffer solutions-buffer action, calculations of pH of Buffers. Importance of buffers. Titration-alkalimetry - acidmetry. Acid-base indicators. Theories of acid base indicators. Selection of acid base indicators. Problems.

6.      Electrochemistry- comparison of electrolytic cells and electrochemical cells, single electrode potential, oxidation- reduction potentials. Standard Hydrogen Electrode. Glass electrode and pH measurement. Calomel electrode – Weston standard cell. Primary and Secondary cells- dry cell, lead storage cell and Nickel – cadmium cell, Fuel cells – Hydrogen- oxygen fuel cell. Problems.

7.      Corrosion- Types of corrosion – Electrochemical theory – Differential metal corrosion, pitting corrosion, waterline corrosion, stress corrosion – caustic embrittlement. Prevention of corrosion – Cathodic and anodic protection, Inhibiters.

8.      Colloids- colloidal solution (sols)- Lyophillic and Lyophobic. Preparation of sols- dispersion methods, condensation methods. Purification, Properties of sols-optical, kinetic, electrical. Stability of sols. Coagulation of sols. Protection of sols . Applications.

9.      Phase rule- terms involved- one component system- water system. Two component system- silver-lead system.

10.  The solid state- types of solids- isotropism, anisotropism, polymorphism, isomorphism. Elements of crystal structure – space lattice, unit cell. Types of crystal systems. Lattice dimensions. X-ray diffraction and crystal structure.

LABORATORY EXPERIMENTS:

  1. Acid- base titration (Acidmetry/ Alkalimetry)
  2. Determination of hardness of water.
  3. Determination of chloride content of water.
  4. Determination of percentage of copper in brass.
  5. Solubility of solids in liquids.
  6. Determination of mol. wt of a substance by Rast’s method.
  7. Determination of density and viscosity of a given liquid.
  8. Conductometric titrations – a) strong acid vs. strong base

         b) weak acid vs. strong base

  1. Pka value of a weak acid using PH meter.
  2. Redox titration using Potentiometer.