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Give the reason for the formation of a light yellow or white ppt. in the group II even if it may not be because of some metal ion. |
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Answer» Solution :Yellow or WHITE PPT. is formed due to the oxidation of `H_(2)S` GAS by some oxidising agents to sulphur which FLOATS on the surface `BaSO_(3)+2HCl+2H_(2)StoBaCl_(2)+3H_(2)O+underset(("yellow"))(3S)` `2NaNO_(2)+H_(2)S+2HClto2NO+2NaCl+2H_(2)O+underset(("yellow"))(S)` `2FeCl_(3)+H_(2)Sto2FeCl_(2)+2HCl+underset(("Yellow"))(S)` |
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