Chemistry Laboratory III

Paper Code: 
24CCHY302
Credits: 
2
Contact Hours: 
60.00
Max. Marks: 
100.00
Objective: 

This course will enable the students to -

develop hands on experience in the operation of conductivity meter, pH meter and potentiometer.

identify organic compounds qualitatively and quantitatively.

 

Course Outcomes (COs):

Course

Learning Outcome

(at course level)

Learning and Teaching Strategies

Assessment Strategies

Course Code

Course

Title

 

24CCHY 302

 

 

 

Chemistry Laboratory III

 (Practical)

 

 

CO31: Calibrate and  operate scientific instruments and perform experiments based on phase equilibria, pH, electrode potential and conductance.

CO32: Identify organic compounds containing monofunctional group.

CO33: Estimate the amount of amino acids and carbohydrates in samples.

CO34: Record experimental data accurately with proper significant figure and analyze the results of such experiments.

CO35: Compile and report the results efficiently, and develop communications skills.

CO36: 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: 

Physical Chemistry                                                                                        (30 Hours)

Major

  1. Study of the variation of mutual solubility temperature with concentration for the phenol water system and determination of the critical solubility temperature.
  2. Study the effect of a solute (NaCl/succinic acid) on the critical solution temperature of phenol-water system and to determine the concentration of that solute in the system.
  3. Determination of degree of dissociation and dissociation constant of a weak acid.
  4. Determine the transition temperature of given substance by thermometric method.
  5. Study of the equilibrium of the following reactions by the distribution method:

I2(aq) + I-(aq) : I3-(aq)

     Cu2+(aq) + x NH2(aq) : [Cu(NH3)x]2+

 

Minor

  1. Determination of cell constant.
  2. Determination of equivalent conductance of electrolyte.
  3. Perform the following conductometric titrations:
    • Strong acid vs. strong base
    • Weak acid vs. strong base
  4. Determine the solubility and solubility product using conductance measurement.
  5. Titration of acetic acid against NaOH pH metrically.
  6. Perform following potentiometric titrations:
  • Strong acid vs. strong base
  • Weak acid vs. strong base
  • Potassium dichromate vs. Mohr's salt
  1. Determination of the concentration of glycine solution by formylation method.
  2. Titration curve of glycine.
  3. Action of salivary amylase on starch.
  4. Effect of temperature on the action of salivary amylase on starch.

 

Organic Chemistry                                                                                               (30 Hours)

Systematic Qualitative Organic Analysis of Organic Compounds possessing monofunctional groups (-COOH, alcoholic, phenolic, aldehydic, ketonic, amide, nitro, amines) and preparation of one derivative. Differentiation between reducing and nonreducing sugars.

 

Scheme of Examination

 

The duration of the examination will be 4 hrs.

The following exercise will be set in the examination -

Physical Chemistry Experiment                                                   30 marks

Organic Chemistry Experiment                                                    28 marks

Viva                                                                                          12 marks

Total                                                                                        70 marks

 

 

 

  1. Physical Chemistry

The exercise carries 28 marks, 4 marks shall be awarded for preparatory work, setting up of an apparatus, neat and methodical work. Either one major experiment or two minor experiments will be allotted to the candidates by lottery.

 

The distribution of marks will be as follows:

  • Theory and procedure                                                               6 marks
  • Correct observation and proper recording                                 8 marks
  • Use of correct formula and calculation                                       6 marks
  • Result                                                                                       4 marks

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

 

  1. Organic Chemistry

Organic Compound Detection-

This exercise carries 28 marks. The distribution of marks will be as follows.

  • Physical properties: colour, state, odour                       1 mark
  • Ignition test (Aliphatic/Aromatic)                                   1 mark
  • Solubility                                                                       1 mark
  • Element detection                                                         5 marks
  • Detection of functional group: Preliminary test             4 marks
  • Confirmatory test of functional groups                          5 marks
  • M.P./B.P.                                                                       2 marks
  • Derivative – procedure & m.p.                                      5 marks
  • Result                                                                           4 marks

 

  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.

 

Essential Readings: 
  1. Advanced Practical Physical Chemistry, Thirtieth Edition; J. B. Yadav; Krishna Prakashan Media Pvt. Ltd., Meerut, 2015.
  2. Advanced University Practical Chemistry, Part I, First Edition; P.C. Kamboj, Vishal Publishing House, New Delhi; 2016.
  3. Textbook of Practical Organic Chemistry, 5th edition; A.I. Vogel, A.R. Tatchell, B.S. Furnis,  A.J. Hannaford & P.W.G. Smith; Prentice-Hall, 1996.

 

References: 
  1. Experiments in Physical Chemistry, Fifth Edition; D. P. Shoemaker, C. W. Garland and J. W. Nibler, Mc Graw-Hill, New York, 1998.
  2. Practical Organic Chemistry, Mann, F.G. & Saunders, B.C. Orient-Longman, 1960.
  3. Comprehensive Practical Organic Chemistry, Ahluwalia, V.K. & Aggarwal, R., Universities Press.

 

e- Resources:

  1. https://vlab.amrita.edu/?sub=3&brch=193&sim=352&cnt=1 (Conductometric titration)
  2. https://courseware.cutm.ac.in/wp-content/uploads/2020/05/CST.pdf (Phenol water system)
  3. https://www.youtube.com/watch?v=aElFjp8DDXw&t=3s (Detection of functional groups)

 

Academic Year: 
2024-2025
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