An aqueous solution of a gas (X) gives the following reactions :   (i) It decolourizes
Channel: Doubtnut
Date: 2020-04-12

An aqueous solution of a gas (X) gives the following reactions :   (i) It decolourizes an acified `K_(2)Cr_(2)O_(7)`.   (ii) On boiling with `H_(2)O_(2)`, cooling it and then adding an aqueous solution of  `BaCI_(2)`, a precipitate insoluble in dilute HCI is obtained.   (iii) On passing `H_(2)S` gas in the solution, white turbidity is obtained. identify (X) and give equations for steps (i), (ii) and (iii).