Werner’s co-ordination theory-primary valency-secondary valency

Werner’s  co-ordination theory .

Alfred Werner’s expressed his famous co-ordination theory about the chemical bonding in complex compounds .

This theory explained the formation of complex compound, chemical bonding in complex compound, nature and three dimensional structure of complex compound successfully.

Double salts-definition-examples and properties in co-ordination chemistry .

Double salts definition in co-ordination chemistry 

When two or more simple salts in stoichimetric proportions are attached to each other, resulting in the formation of a molecular salt which exist only in solid crystal state but
dissociate into their constituent compound in water or any other solvents, then this type of molecular compound is called double salt.

Benzyl alcohol to benzoic acid change-Schmidt reaction-HVZ reaction.

Benzyl alcohol to benzoic acid change

Benzyl alcohol is a aromatic primary alcohol with molecular formula C₆H₅CH₂OH. It is colorless liquid with a mild pleasant aromatic odor.

Benzoic acid may be prepared from benzyl alcohol easily. The change of benzyl alcohol to benzoic acid takes two step.