A metal chloride (X) shows the following reactions : (i) When H_(2)S is passed in acidified aqueous solution of (X) a black ppt. is obtained. (ii) The ppt. obtained in step (i) is not soluble in yellow ammonium sulphide. (iii) When a solution of stannous chloride is added to an aqueous solution of X, a white ppt. is obtained which turns grey on addition of more stannous chloride. (iv) When an aqueous solution of KI is added to an aqueous solution of (X) a red ppt. is obtained which dissolved on addition of excess of KI. Identify X and write down equation for the reactions at step(i), (ii), (iii) & (iv).

A metal chloride (X) shows the following reactions : (i) When H_(2)S i

1.	A metal chloride (X) shows the following reactions : (i) When H_(2)S is passed in acidified aqueous solution of (X) a black ppt. is obtained. (ii) The ppt. obtained in step (i) is not soluble in yellow ammonium sulphide. (iii) When a solution of stannous chloride is added to an aqueous solution of X, a white ppt. is obtained which turns grey on addition of more stannous chloride. (iv) When an aqueous solution of KI is added to an aqueous solution of (X) a red ppt. is obtained which dissolved on addition of excess of KI. Identify X and write down equation for the reactions at step(i), (ii), (iii) & (iv).
Answer» SOLUTION :`X` is `HgCl_(2)`