(i) You are provided with two test tubes containing an aqueous solution of carbonateand sulphite respectively. How will you identify them? (ii) A colourless salt on heating, forms a white sublimate on the cooler sides of the lost tube. The gas evolved is colourless and has a pungent smell. It givos donse white fumes when a rod dipped in conc. HCl is brought near the mouth of the fest tube. Identify the basic radical present in the salt.

(i) You are provided with two test tubes containing an aqueous solutio

1.	(i) You are provided with two test tubes containing an aqueous solution of carbonateand sulphite respectively. How will you identify them? (ii) A colourless salt on heating, forms a white sublimate on the cooler sides of the lost tube. The gas evolved is colourless and has a pungent smell. It givos donse white fumes when a rod dipped in conc. HCl is brought near the mouth of the fest tube. Identify the basic radical present in the salt.
Answer» Solution :(i)On addition of `KnMO_4` to sulphite SALT, decolourization is observed `2MnO_(4)+5SO_(3)^(2-)+6Hto2Mn^(2+)+5SO_(4)^(2-)+3H_(2)O` Carbonate salt solutiondoes not react hence, there will be no decolourization (Acidified `Cr_2O_(7)^(2-)` may also be used instead of acidified `MnO_(4)` solution). (ii) The Formation of a white sublimate and the evoltion of a colorless pungent smelling GAS indicate the PRESENCE of ammounium Ion in the salt. `NH_(4)^(+)toNH_(3)+H` `NH_3+conc.HCIto NH_4Cl`(white sublimate compound)