An inorganic compound (A) is a Lewis acid an d light yellow in colour. It fumes in moist air. The intensity of fumes further increase when a rod dipped in NH_(4)OH is brough near it. The aciedic solution of the compound does not give andy precipitate on passing H_(2)S gas. However, it gives a white precipitate on adding NH_(4)OH solution in the presence of NH_(4)Cl and the white precipitate dissovles on adding NaOH in excess. The solutin formed when white precipitate is dissolved in NaOH is of

An inorganic compound (A) is a Lewis acid an d light yellow in colour.

1.	An inorganic compound (A) is a Lewis acid an d light yellow in colour. It fumes in moist air. The intensity of fumes further increase when a rod dipped in NH_(4)OH is brough near it. The aciedic solution of the compound does not give andy precipitate on passing H_(2)S gas. However, it gives a white precipitate on adding NH_(4)OH solution in the presence of NH_(4)Cl and the white precipitate dissovles on adding NaOH in excess. The solutin formed when white precipitate is dissolved in NaOH is of
Answer» sodium sulphate sodium phosphate sodium chloride sodium meta-aluminate. Solution :The white precipitate of `AL(OH)_(3)` dissolves in excess of NaOH DUE to the formation of sodium metaaluminate. `Al(OH)_(3)+NaOHrarrNaAlO_(2)+2H_(2)O`