Inorganic Chemistry Lab II

Paper Code: 
24CHY226
Credits: 
3
Contact Hours: 
90.00
Max. Marks: 
100.00
Objective: 

This course will enable the students to-

get insight about the different chromatographic techniques, learn about the synthesis of different metal complexes to identify them with the help of IR spectra and understand the different concepts behind the gravimetric and volumetric techniques and their uses in separation of different metal ions from a given mixture.

 

Course Outcomes (COs):

Course

Learning outcome

(at course level)

Learning and Teaching Strategies

Assessment Strategies

Course Code

Course

Title

 

24CHY226

 

Inorganic Chemistry Lab II

 (Practical)

CO83:Apply the knowledge of volumetric and gravimetric techniques in separation and estimation of the amount of different metal ions present in the mixture.

CO84:Utilize the knowledge of chromatographic techniques like paper chromatography and Thin Layer Chromatography for the separation and identification of metal ions.

CO85:Prepare inorganic complexes and interpret their IR spectra.

CO86:Compile and report the results efficiently and develop communication skills.

CO87: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 Quiz

 

Unit I: 

Gravimetric/Volumetric Analysis

Quantitative Analysis

i.    Separation and determination of two metals Ni-Zn, Cu-Fe and Cu-Ba involving volumetric and gravimetric methods.

ii.    Separation and determination of three component mixture (one volumetrically and two gravimetrically, any two)

  1. Pb+2, Zn+2, Cu+2
  2. Zn+2, Cu+2,Fe+2
  3. Cu+2 Fe+2, Ni+2
  4. Cu+2, Ni+2, Mg+2

 

Chromatographic Separation                                                                                         

Paper chromatography

Separation, identification and determination of Rf value of the following (Any two)

  1. Cu and Cd
  2. Ni and Mn
  3. Ni and Co

 

Thin layer chromatography

Separation and determination of Rf value of mixture of complexes containing metal ions-nickel, manganese, cobalt and zinc.

 

Synthesis                                                                                                                         

 Preparation of selected inorganic complexes and their interpretation by IR, UV, TGA and DTA data.(any four)

  1. Metal complexes of dimethyl sulphoxide, CuCl2.2DMSO
  2. Metal oxalate hydrate complexes, Nickel dioxalate
  3. Phosphine, Ph3P and its transition metal complexes
  4. Bisacetylacetonatocobalt (II)
  5. Trisacetylacetonatoiron (III)
  6. Cis and trans bisglycinato copper (II) monohydrate
  7. [VO(acac)2]

 

Scheme of Examination

 

The duration of the examination will be 6 hrs.

The following exercises will be set in the examination

Quantitative Analysis                              30 marks

Chromatographic Separation                  10 marks

Inorganic Synthesis                               15 marks

Viva                                                      15 marks

Total                                                    70 marks       

 

1. Quantitative Analysis

This exercise is the separation and determination of two metals which involves volumetric and gravimetric methods. It carries 30 marks out of which gravimetric estimation carries 14 marks whereas 16 marks are for volumetric estimation.

The distribution of marks in both cases are given as under:

 

Gravimetric Estimation

% Error                      Marks awarded

1.0                               14

1.1                               12

1.2                               10

1.3                               8

1.4                               6

1.5                               4

1.6                               2

1.7                               0

 

Volumetric Estimation

% Error                      Marks awarded

1.5                               16

1.6                               14

1.7                               12

1.8                               10

1.9                               8

2.0                               6

2.1                               4

2.2                               2

2.3                               0

 

2.Chromatographic Separation

Exercises will be allotted to the candidates by lot, which carries 10 marks. 5 marks are reserved for clear separation of the mixture and 5 marks are for determination or Rf value. 

 

3.Inorganic Synthesis

This exercise carries 15 marks. Three marks are reserved for assignment of IR spectra and remaining five marks are reserved for neat, methodical 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. 

 

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 understanding the basic principles of chemistry.

 

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. Infrared and Raman Spectra: Inorganic and co-ordination Compounds, Sixth Edition, Part A & B; K. Nakamoto; John Wiley & Sons, Inc.,  New Jersey, 2009.

 

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

 

e-Resources:

  1. https://nptel.ac.in/courses/104106121

 

Academic Year: 
2024-2025
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