coloured ions 0.0 / 5 ? ChemistryTransition metalsA2/A-levelAQA Created by: StepsstarCreated on: 20-05-15 15:19 [Co(H20) ] +excess NH3 ------> [Co(NH3) ] Pink solution -------> straw-coloured solution 1 of 23 [Co(H20) ] +OH/NH -----------> Co(H20)(OH) pink solution ---------> blue-green precipitate 2 of 23 [Cu(H20) ] +OH/NH ------> Cu(H20) (OH) blue solution -------> blue precipitate 3 of 23 [Co(H20) ] + excess OH blue-green precipitate ------>no change 4 of 23 [Cu(H20) ] + excess OH blue precipitate -------> no change 5 of 23 [Co(H20) ] + Na CO ------> CoCO pink solution -------> pink precipitate 6 of 23 [Cu(H20) ] + Na CO --------> CuCO blue solution -------> green-blue precipitate 7 of 23 [Fe(H20) ] + OH/NH ------> Fe(H20) (OH) green solution ------> green precipitate 8 of 23 [Fe(H20) ] + excess OH green solution -----> no change 9 of 23 [Fe(H20) ] + excess NH Green Solution ------> no change 10 of 23 [Fe(H20) ] + Na CO -------> FeCO green solution -----> green precipitate 11 of 23 [Al(H20) ] + OH/NH ------> Al(H20) (OH) colourless -------> white precipitate 12 of 23 [Al(H20) ] + excess OH -------> [Al(H20) (OH)] Colourless solution ------> colourless solution 13 of 23 [Al(H20) ] + excess NH colourless solution------> no change 14 of 23 [Al(H20) ] + Na CO colourless solution -----> white precipitate 15 of 23 [Cr(H20) ] + OH -------> Cr(H20) (OH) violet solution -----> green precipitate 16 of 23 [Cr(H20) ] + excess OH -------> [Cr(OH) ] violet solution -----> green solution 17 of 23 [Cr(H20) ] + excess NH violet solution --------> purple solution 18 of 23 [Cr(H20) ] + Na CO --------> [Cr(NH ) ] violet solution -------> green precipitate 19 of 23 [Fe(H20) ] + OH/NH --------> Fe(H20) (OH) Yellow solution --------> brown precipitate 20 of 23 [Fe(H20) ] + excess OH yellow solution ---------> no change 21 of 23 [Fe(H20) ] + excess NH yellow solution ---------> no change 22 of 23 [Fe(H20) ] + Na CO --------> Fe(H20) (OH) yellow solution ----------> brown precipitate 23 of 23
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