CHEMISTRY LAB III

Paper Code: 
CHY 215
Credits: 
2
Contact Hours: 
60.00
Max. Marks: 
100.00
Objective: 

Course Objective(s):

This course will enable the students to -

  • Be equipped with practical skills to carry out quantitative analysis involving volumetric estimations.
  • extend the concepts of thermochemistry in calculating the thermodynamic factors for different systems using suitable techniques

Course Outcomes (COs):

Course Outcomes

Teaching learning strategies

Assessment

Strategies

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

CO56: develop the analytical skills to carry out different types of volumetric analysis. CO57: determine enthalpy of neutralization and ionization for different combinations of acid and bases.

CO58: determine the solubility of benzoic acid.
  • Demonstrations
  • Peer learning
  • Interactive lectures
  • Problem solving exercise,
  • Handouts and manuals

 
  • Viva voce
  • Quiz

 

Unit I: 

Inorganic Chemistry                                                              40 Hrs

Calibration of fractional weights, pipettes and burettes. Preparation of standard solutions. Dilution 0.1 M to 0.001 M solutions, concept of Molarity and Normality

Volumetric Analysis:

Acid-Base Titration (any three)

  1. To determine the neutralization equivalent of an acid.
  2. Determination of strength of sodium carbonate and NaOH in the mixture using phenolphthalein and methyl red indicator.
  3. Determination of acetic acid in commercial vinegar using NaOH.
  4. Estimation of saponification value of oil

Redox Titration (any three)

  1. To estimate volumetrically the strength of given FAS solution by using standard solution of KMnO4
  2. Determination of the strength of FAS by titrating with K2Cr2O7 using external indicator (potassium ferricyanide)
  3. Determination of strength of CuSO4   solution using sodium thiosulphate.
  4. Estimation of ferrous (Fe+2) and ferric (Fe+3) ion by dichromate method.
  5. Estimation of glucose by Fehling’s solution/Benedict’s solution method

Complexometric titration

  1. Estimation of hardness of water by EDTA (Temporary and Permanent).

Physical Chemistry                                                           20 Hrs

Thermochemistry

  1. To determine the enthalpy of neutralisation of strong acid and strong base.
  2. To determine the enthalpy of neutralization a weak acid/weak base versus strong base/strong acid and determine the enthalpy of ionization of weak acid/weak base.
  3. Determination of enthalpy of hydration of copper sulfate.
  4. Study of solubility of benzoic acid in water at different temperatures and determination of ∆ H.

 

Essential Readings: 
  • Advanced Practical Physical Chemistry, Eighteenth Edition; J.B. Yadav; Goel Publishing House, Meerut, 2015.
  • Advanced Practical Inorganic Chemistry, Twenty Third Edition; Gurdeep Raj , Krishna Prakashan Media (P) Ltd, Meerut, 2013.

 

References: 

SUGGESTED READINGS:

  • University Practical Chemistry, P.C. Kamboj; Vishal Publishing Co., Delhi, 2019.

e-RESOURCES:

Marking Scheme

The duration of examination will be 4 hrs.

The following exercises will be set in the examination

  • Inorganic Chemistry: Volumetric Analysis                              36 marks
  • Physical Chemistry                                                                19 marks
  • Viva                                                                                        15 marks

                                                Total                                      70 marks

Volumetric Analysis

The exercise carries 36 marks. The distribution of marks will be as follows:
Six 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                        3 marks
  • Use of correct formula and calculation                             4 marks
  • Result                                                                                20 marks

% Error

Marks

% Error

Marks

1.0

20

1.8

6

1.1

18

1.9

5

1.2

16

2.0

4

1.3

14

2.1

3

1.4

12

2.2

2

1.5

10

2.3

1

1.6

8

2.4

0

1.7

7

 

 
 

Physical Chemistry Experiment:

The exercise carries 19 marks. Four marks shall be awarded for preparatory work, setting up of an apparatus, neat and methodical work.

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

  • Theory and procedure                                             3 marks
  • Correct observation and proper recording              2 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.

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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