Answer:
When an alkali metal hydroxide is added to an aqueous solution of cobalt (II) salt, Cobalt(II) hydroxide precipitates as a solid
Explanation:
When an alkali metal hydroxide is added to an aqueous solution of cobalt (II) salt, Cobalt(II) hydroxide precipitates as a solid . For example, 2 NaOH +Co²⁺ →2Na + Co(OH)₂
From the water ligands Hydrogen ion attached to the cobalt ion is removed by the hydroxide ions.
From two of the water molecules , a hydrogen ion has been removed , then the resultant is a complex with no charge i.e. a neutral complex.
One of the important property of cobalt (II) hydroxide are it is slightly soluble in water and it is insoluble in alkalis.
