CHEMISTRY LABORATORY

Paper Code: 
CHY 604
Credits: 
2
Contact Hours: 
60.00
Max. Marks: 
100.00
Objective: 

 

Course Objectives:

This course will enable the students to –

  • understand the core concepts of organic mixture analysis.
  • develop quantitative and qualitative skills and useful techniques for different analytical purposes.

 

Course Outcomes (COs):

Course Outcomes

Teaching Learning Strategies

Assessment Strategies

  
 

On completion of this course, the students will be able to-

CO96: apply suitable techniques to separate an organic mixture with safety.

CO97: document the results obtained through the writing of lab reports.

CO98: learn the spectrophotometric technique.

 
  • Demonstrations
  • Tutorials
  • Group discussion

 

 
  • The oral and written examinations (Scheduled and surprise tests)
  • Problem-solving exercises
  • Quiz
  • Practical Files

 

  
 

 

Unit I: 

Organic Chemistry                                                                              40 Hrs

Qualitative Analysis:
Separation and identification of solid binary mixture using water/NaHCO3 /NaOH and preparation of suitable derivatives.

Physical / Analytical Chemistry                                                          20 Hrs

Colorimetry

  1. Record an absorption spectrum of a substance (KMnO4/K2Cr2O7) using a spectrophotometer and determine absorption maxima (λmax).
  2. To verify the Beer-Lambert law for a compound (potassium permanganate, copper sulphate, methylene blue etc.) and determine the concentration of the substance using calibration curve.
  3. Detection of adulteration of food stuffs - To detect the total dye content in sunset yellow colour
  4. Water analysis- analysis of phosphorus in water.
  5. Job’s method of continuous variation by iron-phenanthroline complex.
  6. Mole ratio method by iron-phenanthroline complex.

Polarimeter (demonstration)

To determine the specific rotation /unknown concentration of an optically active compound (glucose/sucrose)

 

Essential Readings: 
  • Organic Analytical Chemistry: Theory and Practice; JagMohan, Narosa Publishing House, New Delhi, 2014.
  • Vogel’s Textbook of Practical Organic Chemistry, Fifth Edition; B.S. Furniss, A.J. Hannaford, P.W.D. Smith, A.R. Tatchell; Pearson Education, New Delhi, 2003.
  • Monograph on Green Chemistry- Laboratory Experiments- Laboratory Task Force Committee, DST

 

References: 

SUGGESTED READINGS:

  • University Practical Chemistry, Second Edition; P.C. Kamboj, Vishal Publishing House, New Delhi; 2019.

 

e-RESOURCES:

Scheme of Examination

  1. The duration of examination will be 4 hrs.
  2. The following exercise will be set in the examination
  1. organic Chemistry: Mixture analysis                                                36 marks
  2. Physical Chemistry experiment                                                        22 marks
  3. Viva                                                                                                   12 marks
  1. Mixture analysis:

        The exercise carries 36 marks for the identification of two organic compounds; Four marks are reserved for the proper selection technique, rest of the 32 marks are kept for the identification of two organic compounds (16 marks each)

  1.  Physical properties: colour, state, odour                                     1 mark
  2. Solubility                                                                                       1 mark
  3. Aliphatic/ Aromatic                                                                        2 marks
  4. Element detection                                                                         3 marks
  5. Functional group                                                                           2 marks
  6. M.P./B.P.                                                                                        1 mark
  7. Confirmatory test                                                                           2 marks
  8. Derivative- procedure &m.p.                                                          2 marks
  9. Result                                                                                             2 marks

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

Physical Chemistry Experiment

The exercise carries 22 marks, four marks shall be awarded for preparatory work, setting up of an apparatus, neat and methodical work.

Any modifications will not involve any departure from the basic principles over which experiments are prescribed in the syllabus.

Eighteen marks will be awarded for correct observation, use of correct formula, calculation and result within permissible limits.

  1. Theory and procedure                                                                     4 marks
  2. Correct observation and proper recording                                      5 marks
  3. Use of correct formula and calculation                                           5 marks
  4. Result                                                                                              4 marks

The permissible limit will be decided by the examiner as it varies with the nature of experiment.

  1. 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 understood the basic principles of chemistry.

 

 

Academic Year: 
2022-2023
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