Quantitative methods of analysis — DU B.Sc. (Prog.) Applied Physical Science with Analytical Methods in Chemistry & Biochemistry Previous Year Question Papers

11.1.7. Course Code: DSC 7: ANALYTICAL CHEMISTRY3 Course Title: Quantitative Methods of Analysis (Credits: Theory-02, Practical-02) (Total Lectures: Theory- 30, Practical-60) Objectives: The tam objective of this course is to make students acqure knowledge about th asic principles underlying gravimetric and volumetric analysis, different types of titration curves, equilibria principles and environmental analysis Learning Outcomes: By the end of this course, students will be able to: Understand the various titration curves Stability of complexes Know and analyze various pollutants present in environment. Unit 1: Gravimetric Analysis Requisites of precipitation, Nucleation, precipitation, and growth of precipitates; Particle size and filterability of precipitates; Factors influencing precipitation, Co-precipitation, post-precipitation. Super saturation, digestion, precipitation from homogeneous solution, washing of precipitate and ignition of precipitate, Brief idea about method of filtration and drying of precipitate, Use of reagents used in gravimetry (8-hydroxy quinoline (oxine) and dimethyl glyoxime (DMG) Unit 2: Basic principles underlying titrimetric analysis. Acid-base: pH of strong and weak acid solutions. Buffer solutions. Henderson indicators. Theory of redos indicators: Principle and detection of equivalence point by visual & potentiometric methods Precipitation titrations Argentometric titrations, indicators for precipitation titrations involving silver nitrate- Volhard's method., Mor's method, Adsorption indicators. Complexometric titrations: Stability of complexes, titration involving EDTA: direct, back, displacement and indirect determinations. characteristies. Application-determination of hardness of water Problems based on titrimetric analysis. Unit 3: Introduction to Environmental Analysis Environmental analysis of water: colour, odour, taste, conductivity, dissolved solids, hardness, DO, COD, BOD, chlorides, sulphates, nitrates and phosphates Environmental analysis of air: Sampling, particulate matter, gaseous pollutants-SOx, NOx, COx, and organic pollutants Environmental analysis of industrial effluents-estimation of toxic metals Hg. Cd, Pb, As, radiochemical wastes PRACTICALS (Credits: 02, Laboratory Periods: 60) 1. Determination of the pK. of' a weak acid by potentiometric and pH metric titrations. 2. Determination of the strength of the given ferrie chloride solution by titrating it against 3. Estimation of chloride in water by precipitation method. 4. Estimation nickel present in given solution as bis(dimethy|glyoximato nickel(II) /Aluminium as oxinate 5. Draw the absorbance curve of bromophenol blue using a colorimeter. 6. Determination of the composition of the Fet-salicylic acid complex in solution by Job's method (Plot curve using excel also). 7. Determination of the formula of the chelate formed between iron (lI) and Tiron