Flax Laboratories Interview Questions and Answers

Benzene can be converted to toluene through various methods.

• One method is the Friedel-Crafts alkylation reaction, where benzene reacts with methyl chloride in the presence of a Lewis acid catalyst to form toluene.

• Another method is the catalytic hydrogenation of benzene, where benzene is reacted with hydrogen in the presence of a catalyst such as platinum or palladium to yield toluene.

• Benzene can also be converted to to...read more

Molecular weight is calculated by summing the atomic weights of all atoms in a molecule.

• The atomic weight of an element can be found on the periodic table.

• Multiply the atomic weight of each element by the number of atoms in the molecule.

• Add up the results to get the molecular weight.

• For example, the molecular weight of water (H2O) is calculated as (2*1.008) + (1*16.00) = 18.02 g/mol.

The molecular weight of HCL is 36.46 g/mol.

• HCL stands for hydrochloric acid.

• The molecular weight is calculated by adding the atomic weights of hydrogen (H) and chlorine (Cl).

• The atomic weight of hydrogen is 1.00784 g/mol and chlorine is 35.453 g/mol.

• So, the molecular weight of HCL is 1.00784 + 35.453 = 36.46 g/mol.

Two liquid solvents can be separated using various methods such as distillation, extraction, and chromatography.

• Distillation involves heating the mixture to vaporize the solvent with the lower boiling point and then condensing it back into a liquid.

• Extraction involves using a solvent that selectively dissolves one of the solvents, allowing it to be separated from the mixture.

• Chromatography separates the solvents based ...read more