INORGANIC CHEMISTRY LAB I

Paper Code: 
CHY 126
Credits: 
3
Contact Hours: 
90.00
Max. Marks: 
100.00
Objective: 

Course Objectives :

The course aims to acquaint the students with various safety measures including handling of chemicals, safe disposal of chemical wastes etc., to make students understand the concept of separation of mixtures containing metal ions, insoluble and interfering radicals and to make students learn about the quantitative estimation of different ions volumetrically.

Course Outcomes (COs):

Course Outcomes

Teaching Learning strategies

Assessment Strategies

  
 

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

CO37- apply the knowledge of lab safety measures during the experimental work.

CO38- analyze and detect ions, rare elements and other pollutants in the samples of daily use (vegetables, food, water etc.)

CO39- estimate the concentrations of different ions volumetrically.
  • Discussions
  • Demonstrations
  • Problem solving exercise
  • Practical Performance
  • Written Test
  • Quiz
  • Viva Voce

 

 

  
 

 

Unit I: 

Laboratory Safety measures                                                                                                

Safe working procedure and protective environment, protective apparel, emergency procedure and first aid, safe storage and use of hazardous chemicals. Procedure for working with gases above or below atmospheric pressure, safe storage and disposal of waste chemicals, recovery, recycling and reuse of laboratory chemicals, neutralization of strong acids and strong bases, procedure for laboratory disposal of explosives.

Qualitative Mixture Analysis                                                                         

Analysis of mixture for eight radicals (cations and anions) including

  1. Less common metal ions – Mo, W, Ti, Zr, Th, V, U (two metal ions in cationic/anionic forms).

  2. Insolubles – oxides, sulphates and halides.

  3. Interfering- oxalate, phosphate, borate, fluoride.

Quantitative Analysis: Volumetric Analysis (any three)

  1. Determination of chloride ion in water by Mohr’s method or by use of adsorption indicator.
  2. Determination of nickel using Eriochrome Black T as an indicator (Back titration).
  3. Determination of percentage purity of boric acid.
  4. Determination of nitrite in a given sample.

 

Essential Readings: 
  • Vogel's Qualitative Inorganic Analysis, Seventh Edition; G. Svelha, B. Sivasankar; Pearson Education India, New Delhi, 2012
  • 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.

 

References: 

SUGGESTED READINGS:

  • Advanced Practical Chemistry, First Edition; S. C. Das; Calcutta Publishing, Calcutta, 2000.

e-RESOURCES:

 

MARKING INSTRUCTIONS

  1. The duration of examination will be 6 hrs.
  2. The following exercises will be set in the examination

(i) Qualitative Mixture Analysis                                      40 marks
(ii) Volumetric Analysis                                                 15 marks
Viva                                                                            08 marks
Record                                                                        07 marks
Total                                                                              70 marks       

  1. Qualitative Mixture Analysis:
  • The exercise carries 40 marks. Not more than one interfering radical, rare metal as anion and an insoluble will be given in a mixture of eight radicals.
  • Two marks shall be awarded for each radical correctly reported and properly recorded. One mark will be awarded for each correct radical if only dry test or preliminary tests are given. One mark may be awarded to a candidate if she has approached in systematic and correct manner towards the analysis upto a group in analysis of basic radical or correct indicative test of acid radical. Remaining one mark is reserved for confirmatory test of radical.
  1. Volumetric Exercise:
  • The exercise carries 15 marks. The distribution of marks will be as follows: 
  • Five marks will be reserved for the preparation of solutions, neat methodical and systematic working of the candidates.
  • The remaining 8 marks will be distributed as follows:

 

% Error

Marks awarded

<1.0

10

1.1

9

1.2

8

1.3

7

1.4

6

1.5

5

1.6

4

1.7

3

1.8

2

1.9

1

2.0

0
  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.

  1. Record:

Marks will be allotted to the students on the basis of regularity of the checking of the records.

Academic Year: 
2022-2023
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