1. What is Microwave Chemistry? 2. What is Green Chemistry? Write at least five
ID: 903817 • Letter: 1
Question
1. What is Microwave Chemistry?
2. What is Green Chemistry? Write at least five principles of Green Chemistry pertaining to the reaction you are planning to conduct in a microwae assisted Green synthesis?
3. What is the role of separatory funnel? What is an organic layer and aqueous layer? How does the separatory funnel help to isolate the compound?
4. What is a rotary evaporator? What is the role of it in a Microwave Assisted Green Synthesis experiment?
5. What information does the melting point provide us?
Explanation / Answer
Microwave Chemistry is a chemical technique offers simple, clean, fast, efficient and economic for the synthesis of a large number of organic molecules.
This chemistry has provided the momentum for many chemists to switch from traditional heating method to microwave assisted chemistry..
2. What is Green Chemistry? Write at least five principles of Green Chemistry pertaining to the reaction you are planning to conduct in a microwave assisted Green synthesis?
Green chemistry is the utilization of a set of principles that reduces or eliminates the use or generation of hazardous substances in the design, manufacture and application of chemical products.
Following five among the 12 principles the following are the key ones.
a. Prevention of waste
b. Less hazardous chemical synthesis
c. Design for energy efficiency
d. Inherently safer chemistry for accident prevention.
e Designing Safer Chemicals.
3. What is the role of separatory funnel? What is an organic layer and aqueous layer? How does the separatory funnel help to isolate the compound?
The separatory funnel is a glass apparatus with a stopcock on the lower side which is mounted on an suitable base. The extraction of the organic compound is done using the non miscible solvent which is separated on the principle of density. In most of the cases the aqueous layer is below which is separated easily with the help of stopcock. In case of non separation of layers (due to the colourless solution) light could be used to observe the layers. The organic layer containing solvent should have the capacity to absorb(dissolve) the compound from aqueous layer.
4. What is a rotary evaporator? What is the role of it in a Microwave Assisted Green Synthesis experiment?
The rotary evaporator is an distillation apparatus wherein the solvent can be removed from the reaction mixture at a lower temperature and pressure wherein the reactant flask is rotated at a required speed and temperature avoiding the bumping of the solvent.
Since water is one of the reactive solvents in microwave experiment, removal of the solvent without affecting the reaction is best done using a rotary evaporator for concentration and removal of water.
5. What information does the melting point provide us?
The melting point provides the actual purityof the compound under study, hence the possibleidentification of the product.
The mixture of compounds have lower melting point in comparison to the pure product.
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