What is recrystallization of benzoic acid?

Answer 1

What is recrystallization of benzoic acid?

Hello Ab,

Recrystallization usually involves dissolving a given quantity of the acid in a warm solvent such as water or alcohol, then passing the solution through a filter paper to remove any impurities. The acid remains in the solvent and is recrystallized by allowing the solvent to evaporate.

Below is a list of the chemical and physical properties of Benzoic Acid:

Properties
Chemical formula	C7H6O2
Molar mass	122.123 g/mol
Appearance	Colorless crystalline solid
Odor	Faint, pleasant odor
Density	1.2659 g/cm3 (15 °C)	1.0749 g/cm3 (130 °C)[2]
Melting point	122 °C (252 °F; 395 K)[7]
Boiling point	250 °C (482 °F; 523 K)[7]
Solubility in water	1.7 g/L (0 °C)	2.7 g/L (18 °C)	3.44 g/L (25 °C)	5.51 g/L (40 °C)	21.45 g/L (75 °C)	56.31 g/L (100 °C)[2][3]
Solubility	Soluble in acetone, benzene, CCl4, CHCl3, alcohol, ethyl ether, hexane, phenyls, liquid ammonia, acetates
Solubility in methanol	30 g/100 g (−18 °C)	32.1 g/100 g (−13 °C)	71.5 g/100 g (23 °C)[2]
Solubility in ethanol	25.4 g/100 g (−18 °C)	47.1 g/100 g (15 °C)	52.4 g/100 g (19.2 °C)	55.9 g/100 g (23 °C)[2]
Solubility in acetone	54.2 g/100 g (20 °C)[2]