A solution containing a group-iv cation gives a precipitate on passing h2 s. A solution of this precipitate in dil.Hcl produces a white precipitate with naoh solution and bluish-white precipitate with basic potassium ferrocyanide. The cation is :
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A solution that contains a group 4 cation gives ppt on passing hydrogen. A solution of ppt in dilute hydrochloric acid produces a white ppt with sodium hydroxide arrangement due to formation of zinc hydroxide and somewhat blue white ppt with fundamental K4 [ Fe( CN ) 6] due to formation of zinc ferrocyanide. The cation will be zinc.
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