Chemistry OCR A Transition metals colours
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27 Terms
Original colour of Cu2+, specify solution or precipitate
Blue solution
Original colour of Cr3+, specify solution or precipitate
Violet solution
Original colour of Mn2+, specify solution or precipitate
light pink solution
Original colour of Fe2+, specify solution or precipitate
pale green solution
Original colour of Fe3+, specify solution or precipitate
Yellow solution
Cu2+ addition of conc HCl, state original and specify solution or precipitate
Blue solution to yellow solution
Cu2+ addition of NaOH, state original and specify solution or precipitate
Blue solution forms pale blue precipitate
Cu2+ addition of excess NaOH, state original and specify solution or precipitate
No change, remains blue solution with pale blue precipitate
Cu2+ addition of NH3, state original and specify solution or precipitate
Blue solution with pale blue precipitate
Cu2+ addition of excess NH3, state original and specify solution or precipitate
Pale blue precipitate to dark blue solution
Cr3+ addition of NaOH, state original and specify solution or precipitate
Violet solution to grey-green precipitate
Cr3+ addition of excess NaOH, state original and specify solution or precipitate
Grey green precipitate to dark green solution
Cr3+ addition of NH3, state original and specify solution or precipitate
violet solution to grey green precipitate
Cr3+ addition of excess NH3, state original and specify solution or precipitate
Grey green precipitate to purple solution
Mn2+ addition of NaOH, state original and specify solution or precipitate
Pale pink solution to pale pink precipitate
Mn2+ addition of NH3, state original and specify solution or precipitate
Pale pink solution to pale pink precipitate
Mn2+ addition of excess NaOH, state original and specify solution or precipitate
No change, remains pale pink precipitate
Mn2+ addition of excess NH3, state original and specify solution or precipitate
No change, remains pale pink precipitate
Fe2+ addition of NaOH, state original and specify solution or precipitate
Pale green solution to dark green ppt
Fe2+ addition of NH3, state original and specify solution or precipitate
Pale green solution to dark green ppt
Fe2+ addition of excess NaOH, state original and specify solution or precipitate
No change, remains dark green precipitate
Fe2+ addition of excess NH3, state original and specify solution or precipitate
No change, remains dark green precipitate
Fe2+ exposure to air, state original and specify solution or precipitate
Dark green precipitate to orange precipitate
Fe3+ addition of NaOH, state original and specify solution or precipitate
Yellow solution to orange ppt
Fe3+ addition of NH3, state original and specify solution or precipitate
Yellow solution to orange ppt
Fe3+ addition of excess NaOH, state original and specify solution or precipitate
No change, remains orange ppt
Fe3+ addition of excess NH3, state original and specify solution or precipitate
No change, remains orange precipitate