UNIVERSITY OF MADRAS
B.Sc. DEGREE COURSE IN CHEMISTRY
SEMESTER SYSTEM WITH CREDITS
(Effective from the Academic Year 2003-2004)

Semester VI - Paper XII - Analytical Chemistry-II

Duration: 3 hrs
Maximum Marks: 100
Credits: 4

Unit - I

1.1 Polarography - principle - concentration polarization - dropping mercury electrode - advantages and disadvantages - convection, migration and diffusion currents - ilkovic equation (derivation not reuired) and significance - experimental assembly - electrodes - capillary solutions - current voltage curve - oxygen wave - influence of temperature and agitation on diffusion layer - polarography as an analytical tool in quantitative and qualitative analysis. Amperornetry - basic principles and uses.

1.2 Polarimetry principle - instrumentation - comparison of strengths of acids - estimation of glucose.

Unit - II

2.1 NMR spectroscopy - principle of nuclear magnetic resonance - basic instrumentation - shielding mechanism - chemical shift - number of signals - spin - spin coupling and coupling constants - splitting of signals - NMR spectrum of simple organic compounds.

2.2 - Mass spectroscopy - Basic principles of mass spectrum - molecular peak base peak isotopic peak metastable peak their uses fragmentation - Nitrogen rule - determination of molecular fonnulae with examples - instrumentation - mass spectrum of simple organic compounds - identification - alcohols, aldehydes, aromatic hydrocarbons.

2.3 X-ray methods - Bragg's equation - exphnation of terms - determination of structure of NaCl.

Unit - III

3.1 Introduction to computers and its application in chemistiy: - introduction to computers - characteristics of a computer - types of computers - block diagram of a digital computer.

3.2 Introduction to C- structure of a C program key terms - the art of programming - general features of a programming language - Algorithm - Flow chart - the character set of C data types - identifiers - reserved words - variables - constants-key words - escape - sequence type conversion C operations (basic aspects only)

3.3 Applications of computer in chemistry - (only selected programs) determination of molarity, normality and molality of solutions - calculation of pH.