Chemistry Laboratory III

Paper Code: 
C-CHY 302
Credits: 
2
Contact Hours: 
60.00
Max. Marks: 
100.00
Objective: 

Course Objective(s):

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 Outcomes

Teaching Learning Strategies

Assessment Strategies

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

 

CO24: calibrate and operate scientific instruments and perform experiments based on phase equilibria, potentiometry and conductance.

CO25: identify different oxygen and nitrogen containing functional group.

CO26: estimate the amount of amino acids and carbohydrates in samples.

CO27: record experimental data accurately with proper significant figure and analyze the results of such experiments.
  • Laboratory instructions and Demonstrations
  • Conduction of Experiments
  • Lab Records
  • Viva voce

     


 

30.00
Unit I: 

Physical Chemistry
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) + xNH2(aq) : [Cu(NH3)x]2+

Minor

I.      Determination of cell constant.

II.    Determination of equivalent conductance of electrolyte.

III.  Perform the following conductometric titrations:

i.      Strong acid vs. strong base

ii.     Weak acid vs. strong base

IV.   Determine the solubility and solubility product using conductance measurement.

V.    Titration of acetic acid against NaOH pH metrically.

VI.  Perform following potentiometric titrations:

i.       Strong acid vs. strong base

ii.     Weak acid vs. strong base

iii.    Potassium dichromate vs. Mohr's salt

VII.   Determination of the concentration of glycine solution by formylation method.

VIII. Titration curve of glycine.

IX.     Action of salivary amylase on starch.

   X. Effect of temperature on the action of salivary amylase on starch.

 

30.00

Organic Chemistry
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.

Essential Readings: 
  • Advanced Practical Physical Chemistry, Thirtieth Edition; J. B. Yadav; Krishna Prakashan Media Pvt. Ltd., Meerut, 2015.
  • Advanced University Practical Chemistry, Part I, First Edition; P.C. Kamboj, Vishal Publishing House, New Delhi; 2016.
  • 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: 

SUGGESTED READINGS:

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

e- RESOURCES:

 
 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 lot.

 

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.

 

2.    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

 

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 understood the basic principles.

 


 

 

Academic Year: 
2023-2024
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