1.

When excess of `NaOH` solution is added in potash alum the product is.A. a white precipateB. bluish white precipateC. a clear solutionD. a crystalline mass

Answer» Correct Answer - C
Potash alum is `K_(2)SO_(4).Al_(2)(SO_(4))_(3).24H_(2)O` and so,
`{:(Al_(2)(SO_(4))_(3)+6NaOHto2Al(OH)_(3)darr("white")+3Na_(2)SO_(4),),(Al(OH)_(3)+OH^(-)to[Al(OH)_(4)]^(-)("soluble complex")):}`


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