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2021 Scheme Engineering Chemistry 21CHE12/22 Module 5 Notes (Download👇)
21CHE12/22 – Module 5
Water Chemistry, chemical analysis and Instrumental methods of analysis
MODULE 5
Water chemistry:
Introduction, sources and impurities in water, Potable water; meaning and specifications (as per WHO
standards), Hardness of water, types, determination of hardness using EDTA titration, numerical
problems on hardness of water. Definition of Biological oxygen demand (BOD) and Chemical
Oxygen Demand (COD), determination of COD of waste water sample and Numerical problems on
COD.
Methods of Chemical Analysis:
Volumetric Analysis: Introduction, principles of titrimetric analysis, requirement of titrimetric
analysis, primary and secondary standards. Requirement of a primary standard solution, units of
standard solutions- Definition of normality, molarity, molality, mole fraction, ppm.
Instrumental methods of analysis:
Introduction, Theory, Instrumentation and applications of Colorimetry, Flame Photometry,
Potentiometry, Conductometry (Strong acid with strong base, weak acid with a strong base, mixture
of strong acid and a weak acid with a strong base)
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