Analysis of group 4 cation |Confirmatory test of zinc| Salt Analysis class 12

Analysis of group 4 cation |Confirmatory test of zinc| Salt Analysis class 12 is group 4 cation for its analysis we have to go step by step starting from the zero group first group second group third group and then zinc ion is present in 4th group the group reagent of the zero group is concentrated NaOH on heating the salt with conc NaOH will be no change which means group zero is absent the group reagent for group 1 is hydrochloric acid on adding hydrochloric acid to original solution there will be no precipitate which means group 1 absent the second group reagent is hydrogen sulphide in hydrochloric acid on passing H2S gas in HCL containing original solution there will be no change group 2 absent the original solution add ammonium chloride and ammonium hydroxide no precipitate form hence group 3 absent for group 4 the reagent is ammonium chloride ammonium Hydroxide and hydrogen sulphide on passing above 3 in original solution formation of dirty white precipitate shows the presence of zinc ion from the confirmatory test that is sodium Hydroxide test and potassium ferrocyanide test