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CHEMISTRY LABORATORY V
Course Objective(s):
This course will enable the students to–
- understand the fundamental principles of iodometric and iodimetric titartions
- explain preparation and structural aspects of double salts.
Course Outcomes (COs):
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Course Outcomes |
Teaching Learning Strategies |
Assessment Strategies |
|---|---|---|
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On completion of this course, the students will be able to- CO46: prepare simple coordination compounds. CO47: develop the analytical skills to carry out different types of iodometric and iodimetric estimations. |
instructions and demonstrations
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Volumetric analysis: Iodo / Iodimetric Titrations
Theory: Basic principles of iodo and iodimetric titrations.
Experiments:
- Estimation of Cu(II) and K2Cr2O7 using sodium thiosulphate solution (Iodimetrically).
- Estimation of (i) arsenite and (ii) antimony in tartar-emetic (Iodimetrically).
- Estimation of available chlorine in bleaching powder (Iodometrically).
- Determination of percentage of copper in copper sulphate crystals (iodometrically).
Inorganic preparations
- Preparation of cuprous chloride, Cu2Cl2.
- Preparation of manganese(III) phosphate, MnPO4.H2O.
- Preparation of aluminium potassium sulphate KAl(SO4)2.12 H2O (potash alum) or chrome alum.
- Preparation of basic beryllium acetate, 3Be(CH3COO)2.BeO.
Preparation of barium dithionate, BaS2O6.2H2O.
- Vogel’s Textbook of Quantitative Chemical Analysis, Sixth Edition; M. Thomas, B. Sivasankar, J. Mendham, R.C. Denney, J. D. Barnes; Pearson Education, New Delhi, 2009.
- Advanced Practical Inorganic Chemistry, Twenty Third Edition; Gurdeep Raj , KrishnaPrakashan Media (P) Ltd, Meerut, 2013.
SUGGESTED READINGS:
- Advanced University Practical Chemistry, Volume I, First Edition; P.C. Kamboj; VishalPublishing Co, New Delhi, 2013.
e-RESOURCES:
- https://egyankosh.ac.in/bitstream/123456789/43333/1/Exp-8.pdf (available chlorine iodometrically)
- https://www.spcmc.ac.in/wp-content/uploads/2021/02/Estimation-of-CuII-by-iodimetry.pdf (Estimation of Cu(II))
- https://www.coursehero.com/file/13727305/Chem225LabReport9-2/ (arsenit in tartaremetic)
- https://egyankosh.ac.in/bitstream/123456789/15646/1/Unit-5.pdf ( Determination of percentage of copper)
- https://www.youtube.com/watch?v=vpfc4qwsNfc (chrom alum)
- https://www.selfstudys.com/books/cbse-lab-manual/english/12th/7-preparation-of-inorganic-compounds/7155 Inorganic Preparations)
Scheme of Examination
The duration of examination will be 5 hrs.
The following exercises will be set in the examination
Inorganic Chemistry: Volumetric Analysis 35 marks
Inorganic preparations 20 marks
Viva 15 marks
Total 70 marks
Volumetric analysis
The exercise carries 35 marks. The distribution of marks will be as follows:
Five marks will be reserved for the preparation of solutions, neat methodical and systematic working of the candidate.The remaining 30 marks will be distributed as follows:
Theory 3 marks
Correct observation and proper recording 10 marks
Use of correct formula and calculation 7 marks
Result 10 marks
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% Error |
Marks |
% Error |
Marks |
|---|---|---|---|
|
1.0 |
10 |
1.6 |
4 |
|
1.1 |
9 |
1.7 |
3 |
|
1.2 |
8 |
1.8 |
2 |
|
1.3 |
7 |
1.9 |
1 |
|
1.4 |
6 |
2.0 |
0 |
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1.5 |
5 |
|
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Inorganic synthesis
This exercise carries 20 marks. Five marks are reserved for neat, methodical and systematic working. The exercise amongst the candidates will be allotted by lot. The yield, purity and proper presentation of the compound shall be taken into account while awarding marks.
Viva
Oral questions shall generally be asked over the work assigned to the candidate. The purpose is to findout as to what extent the candidate has understood the basic principles.
