Chemistry Laboratory VII

Paper Code: 
24CCHY413
Credits: 
2
Contact Hours: 
60.00
Max. Marks: 
100.00
Objective: 

This course will enable the students to

  • understand the concept of quantitative gravimetric analysis method and learn about the method of preparation of inorganic coordination compounds.
  • gain an in-depth knowledge of various chromatographic techniques.

 

Course Outcomes: 

Course

Learning Outcome

(at course level)

Learning and Teaching Strategies

Assessment Strategies

Course Code

Course

title

 

24CCHY413

 

 

Chemistry Laboratory VII (Practical)

 

CO79: Estimate the amount of metal ions quantitatively using gravimetric method.

CO80: Prepare simple coordination compounds.

CO81: Separate ions by TLC and ascending paper chromatography and identify their Rf value.

CO82: Compile and report the results efficiently, and develop communications skills.

CO83: Contribute effectively in course-specific interaction.

Approach in teaching:

Power point presentation, 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.

 

 

 

Unit I: 

Gravimetric Analysis

  • Estimation of nickel (II) using Dimethylglyoxime (DMG).
  • Estimation of copper as CuSCN.
  • Estimation of iron as Fe2O3 by precipitating iron as Fe(OH)3.
  • Estimation of Al (III) by precipitating with oxine and weighing as Al(oxine)3 (aluminiumoxinate).

 

Inorganic Preparations

  • Tetraamminecarbonatocobalt (III) nitrate
  • Preparation of prussian blue Fe4[Fe(CN)6]3
  • Preparation of cis and trans-bisoxalatodiaquachromate (III)
  • Preparation of bis-Dimethylglyoxime-nickel (II)
  • Preparation of chloropentamminecobalt (III)chloride

 

Chromatography of Metal Ions

Theory: Principles involved in various chromatographic separations.

Experiments: Paper chromatographic separation of following metal ions:

  • Ni (II) and Co (II)
  • Fe (III) and Al (III)

 

Scheme of Examination

The duration of examination will be 5 hrs.

The following exercises will be set in the examinations

Gravimetric analysis                                                       30 marks

Inorganic Preparation                                                     15 marks

Chromatographic separation                                            10 marks

Viva                                                                              15 marks

Total                                                                               70 marks

 

Gravimetric analysis

The exercise carries 30 marks. 5 marks shall be as awarded to a candidate for a neat, methodical and systematic work.

The remaining 25 marks will be distributed as follows:

Theory                                                                             5 marks

Correct observation and proper recording                          5 marks

Use of correct formula and calculation                                        3 marks

Result                                                                              12 marks

 

 

 

% Error

Marks

% Error

Marks

1.0

12

1.7

5

1.1

11

1.8

4

1.2

10

1.9

3

1.3

9

2.0

2

1.4

8

2.1

1

1.5

7

2.2

0

1.6

6

 

 
 

 

Inorganic synthesis

This exercise carries 15 marks. 4 marks are reserved for neat, methodical and systematic working. The exercise amongst the candidates will be allotted by lot.

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

 

Chromatographic Techniques

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

Theory and procedure                                                               3 marks

Preparation of solutions                                                             2 marks

Observation                                                                               3 marks

Result                                                                                       2 marks

 

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. Vogel’s Textbook of Quantitative Chemical Analysis, Sixth Edition; M. Thomas; B. Sivasankar, J. Mendham; R.C. Denney; J. D. Barnes; Pearson Education, New Delhi, 2009.
  2. Advanced Practical Inorganic Chemistry, Twenty Third Edition; Gurdeep Raj, Goel Publishing House, Meerut, 2013.

 

References: 
  1. Advanced University Practical Chemistry, Volume I, First Edition; P.C. Kamboj; VishalPublishing Co, New Delhi, 2013.

 

e-Resources:

  1. https://vlab.amrita.edu/?sub=3&brch=193&sim=348&cnt=1 (Gravimetric analysis)
  2. https://www.youtube.com/watch?v=1LxH8j8piwU (Gravimetric analysis)
  3. https://www.youtube.com/watch?v=HZSKLXD82xo (Inorganic preparation)
  4. https://www.youtube.com/watch?v=e58vR7ttb-w (Inorganic preparation)
  5. https://www.youtube.com/watch?v=ej2zXOwASVI  (Chromatographic separation)

 

 

Academic Year: 
2024-2025
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