CHEMISTRY LAB VI

Paper Code: 
CHY 415
Credits: 
2
Contact Hours: 
60.00
Max. Marks: 
100.00
Objective: 

Course Objective(s):

This course will enable the students to -

  • provide ample training to develop experimental skills of various instruments (conductivity meter, pH meter) and hands on experience to solve kinetics experiments.

Course Outcomes (COs):

Course Outcomes

Teaching Learning Strategies

Assessment

Strategies

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

CO122:  prepare solutions of desired concentrations.

CO123: apply the knowledge of conductivity and pH measurement to perform the experiments based on pH-metry and conductometry.

CO124: calculate rate constant for simple first order and second order reactions.
  • Demonstrations
  • Peer learning
  • Interactive lectures
  • Problem solving exercise,
  • Handouts and manuals

 
  • Viva voce
  • Quiz

 

Unit I: 

Minor Experiment                                                                 20 Hrs

a) Titration of strong/weak acid against NaOH pH-metrically.

b) Determine the dissociation constant of a weak acid pH-metrically.

c)      i) Determination of cell constant of a given conductivity cell.

    ii) Determination of specific and equivalent conductance of the given electrolyte (NaCl) at different dilutions.

d) Determine the solubility and solubility product of a sparingly soluble salt like BaSO4, or PbSO4 or AgCl in water conductometrically.

e) Titration of strong/weak acid against strong/weak base conductometrically.

Major Experiment                                                       40 Hrs

a) First Order Kinetics- To determine the specific reaction rate of the hydrolysis of methyl acetate/ethyl acetate catalyzed by hydrogen ions at room temperature.

b) Second Order Kinetics- To determine the specific reaction rate of the saponification of ethyl acetate at room temperature.

c) To study the effect of acid strength on the hydrolysis of an ester.

d) To study kinetically the reaction rate of decomposition of iodide by H2O2.

e) Titrate a tribasic acid (H3PO4) against a strong base (NaOH) pHmetrically.

f) Determine the composition of mixture of HCl and acetic acid conductometrically using NaOH.

 

Essential Readings: 
  • Advanced Practical Physical Chemistry, Eighteenth Edition; J.B. Yadav; ‎ Krishna Prakashan Media, Meerut, 2015.

 

References: 

SUGGESTED READINGS:

  • Advanced Practical Inorganic Chemistry, Twenty Third Edition; Gurdeep Raj, Goel Publishing        House, Meerut, 2013.
  • College Practical Chemistry; V.K. Ahluwalia, Sunita Dhingra, Adarsh Gulati; Universities    Press (India Pvt Ltd), 2005.
  • Experimental Physical Chemistry, First Edition; V. D. Athawale, P. Mathur; New age         International (P) Ltd. Publishers, New Delhi, 2011.
  • Experimental Physical Chemistry, R. C. Das and B. Behera; Tata Mc-Graw Hill publishing Co.        Pvt. Ltd., 1993.

e-RESOURCES:

 

Marking Instructions

The duration of examination will be 4 hrs.

The following exercises will be set in the examinations

  • Major experiment                                                                      35 marks
  • Minor experiment                                                                      20 marks
  • Viva                                                                                           15 marks

                                                            Total                                  70 marks

Minor experiment

The exercise carries 20 marks. One minor experiment by lot will be given to perform. Four marks shall be awarded for preparatory work, setting up of an apparatus, neat and methodical work.

16 marks will be awarded for correct observation, use of correct formula, calculation and result within permissible limits as follows:

  • Theory and procedure                                                               4 marks
  • Correct observation and proper recording                                4 marks
  • Use of correct formula and calculation                                     5 marks
  •  Result                                                                                       3 marks

Major experiment

The exercise carries35 marks. One major experiment by lot will be given to perform. Five marks shall be awarded for preparatory work, setting up of an apparatus, neat and methodical work.

30 marks will be awarded for correct observation, use of correct formula, calculation and result within permissible limits as follows:

  • Theory and procedure                                                               8 marks
  • Correct observation and proper recording                                8 marks
  • Use of correct formula and calculation                                     8 marks
  • Result                                                                                        6 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 of chemistry.

Academic Year: 
2022-2023
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