Qualitative Tests on Tin and its Compounds

The sequence of the adsorption of these four ions, which are adjacent in the periodic table, is expected to assist in elucidating the adsorption mechanism. The silica powder is shaken with 0.1 M potassium nitrate solution before equilibrating with the transition metal nitrate solution. The filtrate after adsorption, is analysed for the metal ion concentration by atomic absorption and/or polarography. 

Prepare a solution of tin(II) chloride in HCl freshly and add to portions separately  

Prepare a solution of tin(IV) chloride in dil. HCl and add separately to portions of the solution  

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