Nitration of Methyl Benzoate

The video tutorial demonstrates the nitration of methyl benzoate, detailing the preparation of reactants, mixing and cooling of acids, conducting the reaction, and isolating the product. It covers crystallization, filtration, drying, and purification processes, concluding with the determination of the product's melting point.

What is the role of concentrated sulfuric acid in the nitration of methyl benzoate?

• It neutralizes the reaction.

• It is used as a solvent for the reactants.

• It is used to cool the reaction.

• It acts as a catalyst.

What is formed when concentrated sulfuric acid is mixed with concentrated nitric acid?

• Nitrating mixture

• Nitric oxide

• Sulfur trioxide

• Sulfur dioxide

During the reaction, what is the maximum temperature that should not be exceeded?

• 10 degrees Celsius

• 15 degrees Celsius

• 25 degrees Celsius

• 20 degrees Celsius

What is the product formed after the nitration of methyl benzoate?

• Benzoic acid

• Nitrobenzene

• Methyl 3-nitrobenzoate

• Methyl benzoate

What is used to isolate the product after crystallization?

• Simple filtration

• Vacuum filtration

• Centrifugation

• Decantation

Why is the initial weight of the impure product not used for yield calculations?

• It includes the weight of the filter paper.

• It is not pure.

• It is too wet.

• It is too dry.

What solvent is used for the purification of methyl 3-nitrobenzoate?

• Methanol

• Acetone

• Water

• Ethanol

Why is ethanol a suitable solvent for recrystallization?

• It dissolves the product at all temperatures.

• It dissolves impurities only when cold.

• It dissolves the product only when hot.

• It evaporates quickly.

What is the purpose of preparing a melting point tube?

• To weigh the product.

• To measure the density of the product.

• To determine the melting point of the product.

• To store the product.

What is the appearance of the final purified product?

• Clear colorless liquid

• Off white or pale yellow solid

• Bright yellow liquid

• Dark brown solid