(i) A salt solution gives a yellow ppt. with BaCl_2 which is soluble in dil. HCL. On adding acid to the salt solution, it becomes orange in colour. Identify the acid radical. (ii) On treating the salt with dil HCI, a colourless gas turning brown on exposure to air was evolved. On adding FeSO_4, solution, the salt solution gives a brown colour Identify the acid radical present in the salt

(i) A salt solution gives a yellow ppt. with BaCl_2 which is soluble i

1.	(i) A salt solution gives a yellow ppt. with BaCl_2 which is soluble in dil. HCL. On adding acid to the salt solution, it becomes orange in colour. Identify the acid radical. (ii) On treating the salt with dil HCI, a colourless gas turning brown on exposure to air was evolved. On adding FeSO_4, solution, the salt solution gives a brown colour Identify the acid radical present in the salt
Answer» Solution :(i) The acid radical must be chromate. `CrO_(4)^(2-)+Ba^(2+)to BaCrO_4darr` `underset(yellow)(CrO_(4)^(2-))+H hArrHCO_(4)^(-)HARR underset(Orange)(Cr_2O_(7)^(2-)+H_2O` (ii)The acid radical must be nitrite `NO_(2)^(-)H^(+)to HNO_2` `2HNO_2toH_2O+underset("COLOURLESS")(2NO)+O` `2NO+O_2to 2NO_(2)` `