GE6163 Chemistry Lab
Anna University Regulation 2013 Computer Science & Engineering (CSE) GE6163 Chemistry Lab for all experiments is provided below. Download link for CSE 1st SEM GE6163 Chemistry Practices Lab Manual is listed down for students to make perfect utilization and score maximum marks with our study materials.
Anna University Regulation 2013 Computer Science & Engineering (CSE) 1st SEM
GE6163 CHEMISTRY LAB – Chemistry Practices Lab Manual
AIM
To determine the dissolved oxygen in the boiler feed water.
CHEMICALS REQUIRED
Na2S2O3 (N/40), MnSO4 solution, KI, starch, conc. H2SO4
PRINCIPLE
Oxygen dissolves in water to the extent of 7 – 9 mgs/lit at a temperature range of 25 – 35qC.The estimation of dissolved oxygen in water is useful in studying water pollution. Water sample is collected carefully avoiding aeration/deaeration in ground stoppered flask. Initially manganous sulphate and alkali-iodide reagents are added and the reaction occur as follows
PROCEDURE
Titration I
Standardisation of sodium thiosulphate
The burette is washed and rinsed with sodium thiosulphate solution. Then the burette is filled with the given sodium thiosulphate solution. 20 ml of 0.0125N potassium dichromate solution is pipetted out into a clean conical flask. To this, 5 ml of sulphuric acid and 50 ml of 5% potassium iodide are added. This is titrated against sodium thiosulphate solution. When the solution becomes straw yellow colour, starch indicator is added and then titration is continued. The end point is disappearance of blue colour and appearance of light green colour. The titration is repeated to get concordant values.
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Anna University 1st SEM CSE Chemistry Lab
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GE6163 Manual, CHEMISTRY LAB experiment wise Manual – CSE 1st Semester