On adding dilute ammonia solution to the colorless solution of a salt, a white gelatinous precipitate appears. This precipitate, however, dissolves in the addition of an excess of ammonia solution. Identity (choose from Na, Al, Zn,Pb, Fe) (a) Which metal salt solution was used? (b) What is the formula of the white gelatinous precipitate obtained?

Home » On adding dilute ammonia solution to the colorless solution of a salt, a white gelatinous precipitate appears. This precipitate, however, dissolves in the addition of an excess of ammonia solution. Identity (choose from Na, Al, Zn,Pb, Fe) (a) Which metal salt solution was used? (b) What is the formula of the white gelatinous precipitate obtained?

On adding dilute ammonia solution to the colorless solution of a salt, a white gelatinous precipitate appears. This precipitate, however, dissolves in the addition of an excess of ammonia solution. Identity (choose from Na, Al, Zn,Pb, Fe)
(a) Which metal salt solution was used?
(b) What is the formula of the white gelatinous precipitate obtained?

Analytical Chemistry: Uses of Ammonium Hydroxide and Sodium Hydroxide | Chemistry | Class 10 | ICSE | Selina

On adding dilute ammonia solution to the colorless solution of a salt, a white gelatinous precipitate appears. This precipitate, however, dissolves in the addition of an excess of ammonia solution. Identity (choose from Na, Al, Zn,Pb, Fe)
(a) Which metal salt solution was used?
(b) What is the formula of the white gelatinous precipitate obtained?

Solution:

(a) Zinc metal salt solution was used. $ZnCl_2$

(b) The formula of white gelatinous precipitate is $Zn(OH)_2$

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