DEPARTMENT OF CHEMICAL ENGINEERING
V Semester – CH 2307 TECHNICAL ANALYSIS LAB -2010
INDEX SHEET
CYCLE ONE
Date of Condn.
Date of Subn.
Sign
1
Estimation of COD of the given sample of water.
2
Estimation of Manganese in the given pyrolusite ore.
3
Estimation of Magnesium by EDTA method.
4
Estimation of purity of drug using pH meter.
5
Estimation of Ammonia in ammonium salts.
6
Polarimetric estimation of sugar
CYCLE TWO
Date of Condn.
Date of Subn.
Sign
7
Estimation of Phosphorous in the mixed sample.
8
Estimation of Sugar by Lane-Eynon method.
9
Estimation of acid concentration using conductometry.
10
Estimation of copper in brass.
11
Estimation of lead as lead Sulphate.
12
Estimation of Iron using colorimeter.
INSTRUCTIONS
1. Get your Completed observation book signed, on the day of the experiment itself or maximum by the next day.
2. Write the procedure in your record note book in “PAST PASSIVE SEANTENCES ONLY”
3. Concerned, relevant diagrams are to be compulsorily drawn in the record note book for each of the experiment.
4. Positively record has to be submitted when you come for the conduction of the next experiment.
Experiment number: 1 Date:
ESTIMATION OF CHEMICAL OXYGNE DEMAND
AIM: To estimate the amount of chemical oxygen demand for the given water sample.
Principle: The organic matter present in the sample gets oxidized completely by dichromate in the presence of Sulphuric acid to give co2 and H2o. The excess dichromate remaining after reaction is titrated with ferrous ammonium sulphate. The dichromate consumed gives oxygen required to oxidation of organic matter.
Apparatus required: Reflux apparatus, heating mantle, Burette
Reagents: potassium dichromate, Sulphuric acid, silver sulphate, ferrous ammonium sulphate, ferroin, mercuric