Question

why wash the aluminum oxinat by cool water ??​

Answer 1

Answer:

Aluminum forms an oxine complex that can be quantitatively precipitated from aqueous solution between pH 4.2-9.8; it can thus be precipitated from an acetic acid - acetate buffer solution or from an ammoniacal solution.

Explanation:

The reagent is prepared for use in either of the following ways. (a) Two grams of oxine are dissolved in 100 mL of 2M acetic acid, and ammonia solution is added dropwise until a turbidity begins to form; the solution is clarified by the addition of a little acetic (ethanoic) acid.