Chemistry Laboratory VIII

Paper Code: 
24DCHY705
Credits: 
2
Contact Hours: 
60.00
Max. Marks: 
100.00
Objective: 

This course will enable the students to

acquire ample training in handling basic chemical laboratory instruments, develop quantitative and qualitative skills and useful techniques.

 

Course Outcomes: 

Course

Learning Outcome

(at course level)

Learning and Teaching Strategies

Assessment Strategies

Course Code

Course

Title

 

24DCHY

705

 

 

Chemistry Laboratory VIII

    (Practical)

CO115: Work safely in a chemistry lab and know what to do in case of an accident

CO116: Apply suitable techniques to separate and identify organic compounds from the given mixture.

CO117: Perform the experiments  for the determination of the functional groups and samples quantitatively. CO118: Compile and report the results efficiently and develop communication skills.

CO119: Contribute effectively in course-specific interaction

Approach in teaching:

Laboratory instructions and

Demonstrations.

 

Learning activities for the students:

Peer learning, hands-on-learning,

interpretation of data, record writing and learning through virtual labs

 

Conduction of experiments, lab records, viva voce and quiz

 

Unit I: 

Qualitative Analysis

Separation, purification and identification of components of a mixture of two/three organic compounds (one liquid and two solids or three solids) using TLC for checking the purity of separated compounds.

Quantitative Analysis

  1. Determination of the percentage and number of hydroxyl groups in an organic compound by acetylation method.
  2. Estimation of amines/phenols using bromate bromide solution.
  3. Determination of iodine number and saponification value of an oil sample.

 

 

Demonstration Exercise

  1. Estimation of sulphur by messenger or fusion method.
  2. Estimation of nitrogen by Kjeldahl’s method.

 

Scheme of Examination

The duration of the examination will be 6 hrs.

Qualitative Analysis                                                                 30 marks

Quantitative Analysis                                                               25 marks

Viva                                                                                       15 marks

Total                                                                                        70 marks

1.Qualitative Analysis                                        

This exercise carries 30 marks for the identification of two organic compounds. 6 marks are reserved for the proper selection of separation technique, 4 marks for proper reporting of result and rest of the 20 marks are kept for the identification of two organic compounds (10 marks each)

1)     Physical properties: colour, state, odour                                  1/2 mark

2)     Solubility                                                                             1 mark

3)     Aliphatic/Aromatic                                                                1/2 mark

4)     Element(s) detection                                                             2 marks

5)     Functional group(s), M.P./B.P.                                                3 marks

6)     Confirmatory test                                                                  1 mark

7)     Derivative- procedure & M.P.                                                  2 marks

Out of two organic compounds, one compound will be so given that its derivative can be obtained under the prevailing conditions of the laboratory.

 

2.Quantitative Analysis

The exercise carries 25 marks. Distribution is as follows:

  • Theory and procedure                           4 marks
  • Preparation of solutions                         6 marks
  • Observation                                          5 marks
  • Calculation                                            5 marks
  • Result                                                   5 marks

3. Viva

Oral questions shall generally be asked over the work assigned to the candidate. The purpose is to find out as to what extent the candidate has understanding the basic principles.

 

Essential Readings: 
  1. Vogel’s Textbook of Practical Organic Chemistry, Fifth Edition; B.S. Furniss, A.J. Hannaford, P.W.G. Smith, A.R. Tatchell ; Adission – Wesley Longman Ltd. England, 2015.
  2. Practical Organic Chemistry, Fourth Edition; F.C. Mann, B.C. Saunders; Pearson Education Ltd., New Delhi, 2013.

 

References: 
  1. Advanced Practical Organic Chemistry, J. Leonard, B. Lygo and G. Procter;Third Edition; CRC Press,2013.

 

e-Resources:

  1. https://www.researchgate.net/publication/332029217_Qualitative_analysis_of_organic_mixture_Binary_and_Ternary_chart_for_MSc_organic_students (Separation of organic mixture)
  2. https://labmonk.com/determination-of-saponification-value-of-the-given-oil-fat#:~:text=Principle%3A%20Saponification%20value%20is%20defined,titrated%20against%20a%20standard%20acid     (Determination of saponification value )
  3. https://www.youtube.com/watch?v=ll3XnKvIX1o (Estimation of phenols)
  4. https://vlab.amrita.edu/?sub=2&brch=294&sim=1551&cnt=1 (Kjeldahl’s method)
  5. http://sulphur.atomistry.com/estimation.html (estimation of sulphur)

 

Academic Year: 
2024-2025
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