Ozone Gas : Van Marum experienced a peculiar smell near electric discharge machines in 1785. Schonbien in 1840 attributed this characteristic odor to the presence of a new gas and…
By the this methods (click here) a dilute solution of hydrogen peroxide is obtained, which is concentrated by the following method - Chemistry Notes Download Physics Notes Download Biology Notes…
Deuterium (Heavy Water) Oxygen of deuterium (heavy hydrogen) is called heavy water (D2O) . It is also called deuterium oxygen. Ordinary water contains about 1 part of heavy water in…
Benzaldehyde Preparation Toluene: Benzaldehyde is obtained from oxidation of toluene by chromyl chloride CrO2Cl2. This reaction is called Etard’s Reaction.C6H5CH3 + 2CrO2Cl2 → C6H5CH(OCrOHCl2)2 → C6H5CHOBenzaldehyde is also obtained by oxidation…
Phenol is also called carbolic acid. The compounds in which the -OH group is directly attached to the benzene ring are called phenols or phenolic compounds and under these conditions…
Benzenesulfonic acid Preparation Benzenesulfonic acid is obtained from sulphonation of benzene. For this, benzene is heated with concentrated Sulfuric acid.C6H6 + H2SO4(concentrated) → C6H5SO3H + H2O Laboratory Method To make…