Chemistry Laboratory V (A)

Paper Code: 
24DCHY502(A)
Credits: 
2
Contact Hours: 
60.00
Max. Marks: 
100.00
Objective: 

This course will enable the students to

understand the concept of qualitative analysis and chromatographic techniques and provide ample training in the synthesis of different inorganic complexes and identification of given organic compound.

 

Course Outcomes: 

Course

Learning Outcome

(at course level)

Learning and Teaching Strategies

Assessment Strategies

Course Code

Course

Title

 

24DCHY 502(A)

 

 

 

Chemistry Laboratory V (A)

(Practical)

 

CO54: Apply chromatographic technique to separate and identify different components of mixture.

CO55: Prepare coordination complexes and measure their conductance.

CO56: Determine the presence of extra elements in the given organic compound.

CO57: Predict the different types of functional groups in organic compounds, determine melting and boiling points and derivative preparation.

CO58: Compile and report the results efficiently, and develop communications skills.

CO59: 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: 

Inorganic Chemistry                                                                          (30 Hours)

A. Separation of mixtures by chromatography: Measure the Rf value in each case.

(Combination of two ions to be given)

Paper chromatographic separation of Fe3+, Al3+ and Cr3+

Paper chromatographic separation of Ni2+, Co2+, Mn2+ and Zn2+

 

B. Preparation of any two of the following complexes and measurement of their conductivity:

  1. Tetraamminecarbonatocobalt (III) nitrate
  2. Preparation of Prussian blue Fe4[Fe(CN)6]3
  3. Preparation of cis and trans-bisoxalatodiaquachromate (III).
  4. Preparation of Bis-Dimethylglyoxime-nickel (II)
  5. Preparation of Chloropentamminecobalt (III)chloride

 

Compare the conductance of the complexes with that of M/1000 solution of NaCl, MgCl2 and AlCl3.

Organic Chemistry                                                                             (30 Hours)

Qualitative Analysis

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

 

Scheme of Examination

The duration of examination will be 4 hrs.

The following exercises will be set in the examinations

Inorganic Synthesis                                                      18 marks

Inorganic Chemistry: Chromatographic separation           10 marks

organic Chemistry: Mixture analysis                                30 marks

Viva                                                                            12 marks

      Total                                                                     70 marks

 

1.Inorganic Synthesis

This exercise carries 18 marks. 4 marks out of 18 are reserved for neat, methodical and systematic working. The exercise amongst the candidates will be allotted by lot.

The yield, purity and conductance of the compound shall be taken into account while awarding marks.

 

2. Chromatographic Techniques

One chromatographic separation of 10 marks will be given. The distribution of marks is as follows:

·        Theory and procedure                                                   2 marks

·        Preparation of solutions                                                 3 marks

·        Observation                                                                  3 marks

·        Result                                                                           2 marks

 

 

 

3.Organic Mixture analysis

        The exercise carries 30 marks for the identification of two organic compounds; 4 marks are reserved for the proper selection technique, rest of the 26 marks are kept for the identification of two organic compounds (13 marks each)

·        Physical properties: colour, state, odour              1 mark

·        Solubility                                                          1 mark

·        Aliphatic/ Aromatic                                            1 mark

·        Element detection                                              1 mark

·        Functional group                                               2 marks

·        M.P./B.P.                                                            1 mark

·        Confirmatory test                                                2 marks

·        Derivative- procedure &m.p.                                  2 marks

·        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.

 

4.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 University Practical Chemistry, Part I, First Edition; P.C. Kamboj, Vishal Publishing House, New Delhi; 2016.
  2. Advanced Practical Inorganic Chemistry, Twenty Third Edition; Gurdeep Raj; Goel Publishing House, Meerut 2013.
  3. Advanced Practical Organic Chemistry, Jag Mohan; Himalaya Publishing House ,1992.

 

References: 
  1. Textbook of Practical Organic Chemistry, Fifth edition; Vogel, A.I., Tatchell, A.R., Furnis, B.S., Hannaford, A.J. & Smith, P.W.G., Prentice-Hall, 1996.
  2. Practical Organic Chemistry, Mann, F.G. & Saunders, B.C.; Orient-Longman, 1960
  3. Advanced Practical Organic Chemistry, Third Edition; N.K. Vishnoi; Vikas Publishing House, New Delhi, 2009.

 

e-Resources:

  1. https://www.youtube.com/watch?v=7q5HDMXSdtU (chromatographic separation)
  2. https://www.youtube.com/watch?v=ml5nbhyYHTg (inorganic preparation)
  3. https://www.youtube.com/watch?v=-YOViFsRz0A (inorganic preparation)
  4. https://www.youtube.com/watch?v=SilzJBCEins (inorganic preparation)
  5. https://www.youtube.com/watch?v=aElFjp8DDXw (qualitative analysis)

 

Academic Year: 
2024-2025
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