Chemistry Laboratory IV

Paper Code: 
24CCHY 214
Credits: 
2
Contact Hours: 
60.00
Max. Marks: 
100.00
Objective: 

extend the concepts of thermochemistry for calculating the thermodynamic parameters of different systems using suitable techniques.

 

Course outcomes (COs):

Course

Learning Outcome

(at course level)

Learning and Teaching Strategies

Assessment Strategies

Course Code

Course

title

 

24CCHY 214

 

 

Chemistry Laboratory IV

(Practical)

 

CO42: Determine the heat capacity of a calorimeter and apply it to the determine enthalpy of neutralization and ionization for different combinations of acid and bases.

CO43: Determine the enthalpy of hydration, integral enthalpy of solution and solubility of compounds.

CO44: Compile and report the results efficiently, and develop communications skills.

CO45: 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: 

Thermochemistry

  • Determination of heat capacity of a calorimeter for different volumes using change of enthalpy data of a known system (method of back calculation of heat capacity of calorimeter from known enthalpy of solution or enthalpy of neutralization).
  • Determination of heat capacity of the calorimeter and enthalpy of neutralization of hydrochloric acid with sodium hydroxide.
  • Calculation of the enthalpy of ionization of ethanoic acid.
  • Determination of heat capacity of the calorimeter and integral enthalpy (endothermic and exothermic) solution of salts.
  • Determination of basicity/proticity of a polyprotic acid by the thermochemical method in terms of the changes of temperatures observed in the graph of temperature versus time for different additions of a base. Also calculate the enthalpy of neutralization of the first step.
  • Determination of enthalpy of hydration of copper sulphate.
  • Study of the solubility of benzoic acid in water and determination of ∆H.

 

Any other experiment related to thermochemistry and equilibria can be carried out in the class.

 

 

Scheme of Examination

 

The duration of examination will be 5 hrs.

The following exercises will be set in the examination

Physical Chemistry Experiments (two)

     Experiment I                                                            27 marks

      Experiment II                                                          28 marks

 Viva                                                                15 marks

        Total                                                                         70 marks

 

The exercise carries 27 marks / 28 marks. The exercises in Physical chemistry can be modified by the examiners and the same will be explained to the candidates. However, such modifications will not involve any departure from the basic principles over which experiments are prescribed in the syllabus.

Candidates shall be given two exercise out of the exercises prescribed in the syllabus. 4 marks shall be awarded for preparatory work, setting up of an apparatus, neat and methodical work.

Twenty-three / Twenty four marks will be awarded for theory and procedure, correct observation and proper recording, use of correct formula, calculation and result within permissible limits. The distribution of marks will be as follows:

 

Theory and procedure                                                   6 marks

Correct observation and proper recording                       5 marks

Use of correct formula and calculation                            6 marks

Result                                                                           6 marks / 7 marks

 

The permissible limit will be decided by the examiner as it varies with the nature of the experiment.

 

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 Practical Physical Chemistry; Eighteenth Edition; J.B.Yadav; Goel Publishing House, Meerut, 2015.
  2. Advanced University Practical Chemistry, Part I, First Edition; P.C. Kamboj, Vishal Publishing House, New Delhi; 2016.

 

References: 
  1. Experimental Physical Chemistry, First Edition; V. D. Athawale and P. Mathur; New age International (P) Ltd. Publishers, New Delhi, 2011.

 

e-Resources:

 

  1. https://vlab.amrita.edu/index.php?sub=2&brch=190&sim=1546&cnt=1 (Calorimetry -Heat of Neutralization)
  2. https://www.youtube.com/watch?v=S9D6tWM49uM (Enthalpy of Neutralization of SA & SB)
  3. https://www.youtube.com/watch?v=vV6XnG4Sl8I (Determination of Solubility of benzoic acid and heat of dissolution)
  4. https://www.youtube.com/watch?app=desktop&v=KsmF4Ff6OBA (Determine Enthalpy of Copper Sulphate)

 

Academic Year: 
2024-2025
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