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ANNA UNIVERSITY: CHENNAI-600 025
B.E./B.TECH DEGREE EXAMINATIONS, APRIL/MAY-2014
Regulations: R-2013
Second Semester
(Common to All Branches)
GE6262-Physics and Chemistry Laboratory-II
(Chemistry Laboratory - II)
Duration: 3 Hours Maximum Marks: 50
1.

Determine the amount of alkalinity present in the given water sample. You are provided with a

standard solution of Sodium hydroxide and a link solution of hydrochloric acid.
50
2. Estimate the amount of hydroxide and carbonates ions present in the given water sample. A
standard solution of Na2CO3 and a link solution of HCl are provided.
50
3. Which of the two given water samples A and B more alkalinity? You are provided with standard
solution of HCl.
50
4. Compare the total hardness present in the given hard water samples A& B by EDTA method. You
5.

are provided with standard hard water and link solution of EDTA.
50
Estimate the amount of total hardness present in the given hard water sample. You are provided with

0.01M solution of EDTA
50
6. Estimate the total hardness of the given water sample. You are provided with a standard solution of
MgSO4 and a link EDTA solution.
50
7. Estimate the amount of copper present in the given CuSO 4 solution. You are provided with a
standard solution of ZnSO4 and a link EDTA solution
50
8. Estimate the amount of copper ions present in the given CuSO 4 solution by complex metric
titrations. You are provided with a standard solution of MgSO4 and a link solution of EDTA. 50
9. Compare the strength of the copper ions present in the brass solution A and B by complexo
metrically. You are provided with a standard EDTA solution
50
10. Estimate the amount of ferric ion present in the given ferrous ammonium sulphate solution by
potentiometric titration. You are provided with a standard solution of K2Cr2O7.
50
11. Estimate the amount of ferric ion present in the given Ferrous ammonium sulphate solution by
potentiometric estimation. You are provided with a standard solution of K 2Cr2O7. Draw the
following graph. Plot the volume of K2Cr2 O7 Vs ΔE/ΔV
12. Determine the strength of the given BaCl2 solution by conductometric

50
precipitation method

using a standard K2SO4 solution.
50
13. Determine the strength of the given Na2SO4 solution by conductometric precipitation method using
a standard BaCl2 solution.
50
14. Determine the strength of the given BaCl2 solution by conductometric precipitation method using a
standard Na2SO4 solution.
50
15. Compare the iron content in the given water samples A & B using Flame photometry. Draw the
following graph.
. (i) Calibration curve (plot of concentration of sodium Vs emission intensity).

50

16. Estimate the amount of sodium present in the given water sample using flame photometry method.
Draw the following graph.
(i) Plot of concentration of sodium solution Vs Emission intensity).
50
17. Determine the rate of corrosion of mild steel by weight loss method using HCl at different
concentrations.
50
18. Determine the rate of corrosion of mild steel in HCl using Potentiometric method. You are provided
standard solution of K2Cr2O7. Plot the volume of K2Cr2 O7 Vs ΔE/ΔV.
50
19. Estimate the amount of CaO present in the given cement sample. You are provided with standard
solution of KMnO4.
50
20. Compare the CaO content present the given cement samples.You are provided with standard
solution of KMnO4.

50

STATEMENT OF MARK DISTRIBUTION
Short procedure
15

Internal Examiner

Experiment
20

Result
10

Viva
5

Total
50

External Examiner

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