Inorganic Chemistry Lab II

Paper Code: 
CHY 226
Credits: 
3
Contact Hours: 
90.00
Max. Marks: 
100.00
Objective: 

Course Objectives :

The course aims to make the students aware of the different chromatographic techniques, to make students learn about the synthesis of different metal complexes and to identify them with the help of IR spectra and to make students understand about the different concepts behind the gravimetric and volumetric techniques and its uses in separation of different metal ions from a given mixture.

 

Course Outcomes (COs):

Course Outcomes

Teaching Learning Strategies

Assessment Strategies

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

CO80- apply the knowledge of volumetric and gravimetric techniques in separation and estimation of the amount of different metal ions present in the mixture.

CO81-utilize the chromatographic techniques like paper chromatography and Thin Layer Chromatography for the separation and identification of metal ions.

CO82- prepare inorganic complexes and interpret their IR spectra.
  • Interactive lectures
  • Discussions
  • Tutorials
  • Problem solving
  • Written test
  • Tutorials
  • Viva-voce
 

 

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)

        a.         Pb+2, Zn+2, Cu+2

        b.         Zn+2, Cu+2,Fe+2

        c.         Cu+2 Fe+2, Ni+2

        d.         Cu+2, Ni+2, Mg+2

 Chromatographic Separation

Paper chromatography

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

i.       Cu and Cd

ii.     Ni and Mn

iii.    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)

i.       Metal complexes of dimethyl sulphoxide, CuCl2.2DMSO

ii.     Metal oxalate hydrate complexes, Nickel dioxalate

iii.    Phosphine, Ph3P and its transition metal complexes

iv.    Bisacetylacetonatocobalt (II)

v.     Trisacetylacetonatoiron (III)

vi.    Cis and trans bisglycinato copper (II) monohydrate

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]

 

 

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

References: 

SUGGESTED READINGS:

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

e-RESOURCES:

 

MARKING INSTRUCTIONS

  1. The duration of examination will be 6 hrs.
  2. The following exercises will be set in the examination
  1. Quantitative Analysis                          30 marks
  2. Chromatographic Separation             10 marks
  3. Inorganic Synthesis                            15 marks
  4. Viva                                                     15 marks
    Total                                                    70 marks       
  1. Inorganic Chemistry: Quantitative Analysis

This exercise is 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
  1. Chromatographic Separations:

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.

  1. 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.

  1. 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.

Academic Year: 
2022-2023
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