RP11: Transition metal test tube reactions

• [Fe(H2O)6]2+ is a green solution
• [Fe(H2O)6]2+ with NaOH turns green solution to green precipitate (brown on standing in air)
• [Fe(H2O)6]2+ with excess NaOH turns green solution to green precipitate but not further change
• [Fe(H2O)6]2+ with NH3 turns green solution to green precipitate (brown on standing in air)
• [Fe(H2O)6]2+ with excess NH3 turns green solution to green precipitate but no further change
• [Fe(H2O)6]2+ with Na2CO3 turns green solution to green precipitate
• [Fe(H2O)6]3+ is a purple/brown/yellow solution
• [Fe(H2O)6]3+ with NaOH turns brown solution to brown precipitate
• [Fe(H2O)6]3+ with excess NaOH turns brown solution to brown precipitate (no further change)
• [Fe(H2O)6]3+ with NH3 turns brown solution to brown precipitate
• [Fe(H2O)6]3+ with excess NH3 turns brown solution to brown precipitate (no further change)
• [Fe(H2O)6]3+ with Na2CO3 turns brown solution to brown precipitate with CO2 gas (effervescence)
• [Cu(H2O)6]2+ is a blue solution
• [Cu(H2O)6]2+ with NaOH turns blue solution to blue precipitate
• [Cu(H2O)6]2+ with excess NaOH turns blue solution to blue precipitate (no further change)
• [Cu(H2O)6]2+ with NH3 turns blue solution to blue precipitate
• [Cu(H2O)6]2+ with excess NH3 turns blue precipitate into deep blue solution
• [Cu(H2O)6]2+ with Na2CO3 turns blue solution to blue-green precipitate
• [Al(H2O)6]3+ is a colourless solution
• [Al(H2O)6]3+ with NaOH turns colourless solution to white precipitate
• [Al(H2O)6]3+ with excess NaOH turns white precipitate to colourless solution
• [Al(H2O)6]3+ with NH3 turns colourless solution to white precipitate
• [Al(H2O)6]3+ with excess NH3 turns colourless solution to white precipitate (no further change)
• [Al(H2O)6]3+ with Na2CO3 turns colourless solution to white precipitate and CO2 released (effervescence)