A certain inorganic compound (X) shows the following reactions : i) On passing H_(2)S through an acidified solution of (X) a brown precipitate is obtained. ii) The precipitate obtained at step (i) dissolves in excess of yellow ammonium sulphide. iii) On adding an aqueous solution of NaOH to a solution of (X), first a white prcipitate is obtained which dissolves in excess of NaOH. iv) The aqueous solution of (X) reduces ferric chloride. Identify the cation of (X) and give chemical equations for reactions sat steps (i), (iii) and (iv).

A certain inorganic compound (X) shows the following reactions : i) O

1.	A certain inorganic compound (X) shows the following reactions : i) On passing H_(2)S through an acidified solution of (X) a brown precipitate is obtained. ii) The precipitate obtained at step (i) dissolves in excess of yellow ammonium sulphide. iii) On adding an aqueous solution of NaOH to a solution of (X), first a white prcipitate is obtained which dissolves in excess of NaOH. iv) The aqueous solution of (X) reduces ferric chloride. Identify the cation of (X) and give chemical equations for reactions sat steps (i), (iii) and (iv).
Answer» Solution :Acidified solution of (X) gives brown PRECIPITATE with `H_(2)S` , soluble in yellow ammonium sulphide, INDICATE that (X) should be a salt of `Sn^(2+)`. The given reactions of the CATION of X, i.e., `Sn^(2)` can be written as below. `i) Sn^(2+)+H_(2)S rarr SnS +2H^(+)` `iii) Sn^(2+)+2NAOH rarr Sn(OH)_(2)+2Na^(+)` `Sn(OH)_(2)+2NaOH rarr Na_(2)SnO_(2)+2H_(2)O` `iv) Sn^(2+)+2FeCl_(3)rarr Sn^(4+)+2FeCl_(2)`