Coming soon
Chemistry Laboratory VI A
Course Objective(s):
This course will enable the students to -
develop critical thinking and problem-solving skills through experiments promoting sustainable practices.
Course Outcomes (COs):
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Course Outcomes |
Teaching Learning Strategies |
Assessment Strategies |
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|---|---|---|---|
On completion of this course, the students will be able to –
CO58: learn the use of green chemistry principles and processes in laboratory reactions as a benign approach. CO59: compare the advantages of green procedures over conventional synthesis. CO60: apply sustainable practices in their work and contribute to the development of a greener and more sustainable society |
· Laboratory instructions and Demonstrations
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· Conduction of Experiments · Lab Records · Viva voce
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1. Safer starting materials
· Preparation and characterization of nanoparticles of copper/silver using tea leaves.
2. Using renewable resources
· Preparation of biodiesel from vegetable/ waste cooking oil.
3. Minimizing waste
· Acetylation – Acetylation of aniline/salicylic acid.
· Nitration - Preparation of 4-nitrosalicylic acid
4. Use of enzymes as catalysts
· Benzoin condensation using Thiamine Hydrochloride as a catalyst instead of cyanide.
5. Avoiding Harmful Solvents:
· Diels-Alder reaction between furan and maleic acid
· Aldol Condensation: Synthesis of dibenzal propanone
· Rearrangement: Benzil-Benzilic acid rearrangement
· Pechmann Condensation for Coumarin synthesis: Clay catalysed solid state synthesis of 7-hydroxy -4- methyl coumarin
· Nitration - Preparation of 4-nitrosalicylic acid
6. Alternative sources of energy
· Solvent free, microwave assisted ammonium formate-mediated Knoevenagel reaction
· Photoreduction of benzophenone to benzopinacol in the presence of sunlight.
7. Inorganic Preparations (Green methods)
- Preparation of Manganese(III) acetylacetonate
- Preparation of Iron(III) acetylacetonate
- Green Chemistry: Theory and Practice, P.T. Anastas and J.C. Warner. Oxford University Press,1998.
- Greener Approaches to Undergraduate Chemistry Experiment, Kirchoff, M. & Ryan, M.A.; American Chemical Society, Washington DC, 2002.
- Green Chemistry Experiments: A monograph, Sharma, R.K.; Sidhwani, I.T. & Chaudhari, M.K. I.K., International Publishing House Pvt Ltd. New Delhi. Bangalore, 2012
SUGGESTED READINGS:
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Introduction to Green Chemistry, Tinnes and; (Ed; Ryan, M.A., American Chemical Society, Washington DC, 2002.
- Real world cases in Green Chemistry, Cann, M.C. & Connelly, M. E., American Chemical Society, 2008.
e-RESOURCES:
- https://faculty.ksu.edu.sa/sites/default/files/green-chem.pdf (all the experiments except nanoparticles preparation)
- Https://Www.Researchgate.Net/Publication/315976417_Practical_Approach_to_Green_Chemistry( Rearrangement, Nitration, Aldol Condensation)
- https://pubs.rsc.org/en/content/articlelanding/2022/na/d1na00509j (Nanoparticles of copper/silver using tea leaves)
Scheme of Examination
- The duration of examination will be 4 hrs.
- The following exercise will be set in the examination
Synthesis (any two) 58 marks
Viva 12 marks
Total 70 marks
1.Synthesis
Students will be allotted two synthesis of 29 marks each. The yield, crystallization and recording of melting point will be given due consideration while awarding marks.
2. 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.
