Coming soon
Chemistry Laboratory XIV(A)
This course will enable the students to
explore the principles of green chemistry and how they can be applied to designing chemical syntheses, develop critical thinking and problem-solving skills through experiments that promote sustainable practices.
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Course |
Learning Outcome (at course level) |
Learning and Teaching Strategies |
Assessment Strategies |
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Course Code |
Course title |
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24DCHY616(A)
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Chemistry Laboratory XIV(A) (Practical)
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CO161: Integrate green chemistry principles and processes in laboratory reactions as a benign approach. CO162: Compare the advantages of green procedures over conventional synthesis. CO163: Apply sustainable practices in their work and contribute to the development of a greener and more sustainable society. CO164: Compile and report the results efficiently, and develop communications skills. CO165: 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.
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Safer starting materials
- Preparation and characterization of nanoparticles of copper/silver using tea leaves.
Using renewable resources
- Preparation of biodiesel from vegetable/ waste cooking oil.
- Minimizing waste
- Acetylation: Acetylation of aniline/salicylic acid.
- Nitration: Preparation of 4-nitrosalicylic acid
Use of enzymes as catalysts
- Benzoin condensation using thiamine hydrochloride as a catalyst instead of cyanide.
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
Alternative sources of energy
- Solvent free, microwave assisted ammonium formate-mediated Knoevenagel reaction
- Photoreduction of benzophenone to benzopinacol in the presence of sunlight.
Inorganic preparations (green methods)
- Preparation of manganese(III) acetylacetonate
- Preparation of iron(III) acetylacetonate
Scheme of Examination
The duration of examination will be 5 hrs.
The following exercise will be set in the examination
Synthesis (any two) 58 marks
Viva 12 marks
Total 70 marks
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.
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.
- 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, 2012.
- 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)
