Chemistry Laboratory I

Paper Code: 
24CCHY 113
Credits: 
2
Contact Hours: 
60.00
Max. Marks: 
100.00
Objective: 

This course will enable the students to

be acquainted with various safety measures and use of apparatus used in volumetric analysis and correct titrimetric procedure along with standard and nonstandard solutions.

Course outcomes (COs):

Course

Learning Outcome

(at course level)

Learning and Teaching Strategies

Assessment Strategies

Course Code

Course

Title

 

24CCHY 113

 

 

Chemistry Laboratory I

(Practical)

 

CO13: Apply the knowledge of lab safety measures during the experimental work.

CO14: Comprehend the concept of volumetric analysis including acid-base and redox titrations.

CO15:  Develop the analytical skills to carry out different types of volumetric analysis.

CO16: Compile and report the results efficiently, and develop communications skills.

CO17: 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: 

Laboratory Safety Measures                                                                                     (6 Hours)

Handling of hazardous chemicals, incompatible chemicals, flammable solvents, fire hazards in chemical laboratory, control of fire, fire extinguishers, toxicity of chemicals, forms of toxic materials, personal protective equipment, health effects and first aid, MSDS (material safety data sheet), use of compressed gases, waste minimization strategies and chemical waste disposal, procedures for neutralization of strong acids and strong bases.

 

Volumetric Analysis                                                                                       (54 Hours)

Classification and primary requirements of titrations, concept of normality and molarity.

Acid-base titrations: basic principle, neutralization indicators- types, theories of indicators, choice of indicators, titration curves and applications.

Redox titrations: Principle, indicators, and applications of permangnatometry, dichromatometry, iodometry titrations, redox equations, standard electrode potential and its application to inorganic reactions.

Calibration of fractional weights, pipettes and burettes, preparation of standard solutions, dilution – 0.1 M to 0.001 M solutions, buffer solutions.

 

Experiments

  • Estimation of carbonate and hydroxide present together in mixture.
  • To determine the neutralization equivalent of an acid.
  • Estimation of carbonate and bicarbonate present together in a mixture.
  • Estimation of free alkali present in different soaps/detergents.
  • Determination of acetic acid in commercial vinegar using NaOH.  
  • Estimation of Fe(II) using standardized KMnO4 solution.
  • Estimation of oxalic acid and sodium oxalate in a given mixture.
  • Estimation of Fe(II) with K2Cr2O7 using internal (diphenylamine, anthranilic acid)and external indicator.
  • Estimation of ferrous and ferric ion by dichromate method.

 

Scheme of Examination

 

The duration of examination will be 5 hrs.

The following exercises will be set in the examination –

Quiz based on lab safety measures                                             10 marks

Volumetric Analysis

Acid-Base Titrations                                                                   22 marks

Redox Titrations                                                                         23 marks

Viva                                                                                          15 marks

Total                                                                                        70 marks

 

Quiz based on Lab Safety Measures

The Quiz will consist of 10 objective-type questions (Multiple Choice Questions/Fill in the blanks/One-word answer/True or False/Match the following etc.) carrying 1 mark each. The duration of the quiz will be 10 minutes.

 

Volumetric Analysis

Two volumetric exercises (one acid-base and one redox) will be given carrying 22 and 23 marks respectively. The distribution of marks will be as follows:

4 marks of each volumetric exercise will be reserved for the preparation of solutions, neat methodical and systematic working of the candidate.

 

 

The remaining 18/19 marks of each volumetric exercise will be distributed as follows:

Theory                                                                                      4 marks

Correct observation and proper recording                                   4/5 marks

Use of correct formula and calculation                                        4 marks

Result                                                                                       6 marks

 

 

Percentage Error

≤1.0

>1.0 &<1.5

 

>1.5 &<2

 

>2

 

Marks Awarded

6

4

2

0
 

 

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; 2013.
  2. 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: 
  1. Advanced Practical Inorganic Chemistry, Twenty Third Edition; Gurdeep Raj , Krishna Prakashan Media (P) Ltd, Meerut, 2013.

 

e-Resources:

  1. https://chem.libretexts.org/Bookshelves/Analytical_Chemistry/Supplemental_Modules_(Analytical_Chemistry)/Quantifying_Nature/Volumetric_Chemical_Analysis_(Shiundu) (Volumetric Analysis)
  2. https://egyankosh.ac.in/simple-search?query=titration (Volumetric Analysis)
  3. https://egyankosh.ac.in/bitstream/123456789/43262/1/Unit-5.pdf (Lab Safety)
  4. https://www.chem.uci.edu/~ardo/echem/UCI-CHEM248-2020F_lecture04.pdf (Oxidation and Reduction)

 

Academic Year: 
2024-2025
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