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1: Experimental Chemistry: Qualitative Analysis of Salts: Identifying Cations (part2) Flashcards

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9303037968Identifying cationscan be identified by using sodium hydroxide solution and aqueous ammonia (all ex Na+,K+ and NH+4 it gives precipitate with alkalis0
9303048209Can be identified by noting-colour of the precipitate when it react NaOH (aq) / NH4 (aq) -whether the precipitate is soluble / insoluble with NaOH (aq) / NH4 (aq) -whether ammonia gas is liberated on heating with NaOH (aq)1
9303059777Al3+ (aluminium) with a few drops of NaOHwhite ppt formed2
9303066299Al3+ (aluminium) with excess of NaOHppt will dissolve in excess to give colourless solution3
9303069182Al3+ with a few drops of NH3white ppt formed4
9303072199Al3+ with excess NH3ppt formed is insoluble in excess5
9303077270Ca2+ with a few drops of NaOHwhite ppt formed6
9303079517Ca2+ with excess of NaOHppt is insoluble in excess7
9303081119Ca2+ with few drops / excess NH3no ppt formed8
9303088095Cu2+ with few drops NaOHlight blue ppt will form9
9303089235Cu2+ with excess NaOHppt will be insoluble in excess10
9303094415Cu2+ with few drops of NH3light blue ppt will form11
9303094880Cu2+ with excess of NH3ppt will dissolve in excess to give a deep blue solution12
9303105458Fe2+ with a few drops of NaOHA green ppt will form13
9303106557Fe2+ with excess of NaOHppt is insoluble in excess14
9303112776Fe2+ with few drops of NH3green ppt will form15
9303124781Fe2+ with excess of NH3+ppt is insoluble in excess16
9303129174Fe3+ with a few drops of NaOHreddish-brown precipitate is formed17
9303131008Fe3+ with excess NaOHppt is insoluble in excess18
9303139711Fe3+ with few drops of NH3redish-brown precipitate will form19
9303142662Fe3+ with excess drops of NH3ppt is insoluble in excess20
9303146403Pb2+ with a few drops of NaOHwhite ppt will form21
9303149006Pb2+ with excess NaOHppt dissolves in excess to give colourless solution22
9303153401Pb2+ with a few drops of NH3white ppt is formed23
9303156619Pb2+ with excess NH3ppt is insoluble in excess24
9303181640Zn2+ with a few drops of NaOHwhite ppt will form25
9303183656Zn2 with excess of NaOHppt dissolves in excess to give coloursless solution26
9303192172Zn2 with a few drops of NH3white ppt will form27
9303193305Zn2 with excess of NH3ppt dissolves in excess to give colourless solution28
9303244586NH4 with a few drops of NaOHno ppt will form29
9303245855NH4 with excess NaOHduring heating, ammonia gas is evolved. Ammonia will turn red litmus blue30
9953665419To determine whether the experiment contains aqueous sodium carbonate OR aqueous ammonium carbonateAdd sodium Hydorxide (NaOH) and warming31

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