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Transition Metal Colour(AQA)

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nucevoge's version from 2016-05-11 09:30

Section 1

Question Answer
Fe(H2O)6 2+Pale Green Solution
Cr(H2O)6 3+Green/violet/ruby Solution
Co(H2O)6 2+pink solution
Cu(H2O)6 2+blue solution
Al(H2O)6 3+colourless solution
Fe(H2O)6 3+Yellow solution
memorize

Section 2

Question Answer
Al(H2O)6 3+ plus limited NaOHwhite ppt
Fe(H2O)6 3+ plus limited NaOHbrown ppt
Cr(H2O)6 3+ plus limited NaOHgreen ppt
Co(H2O)6 2+ plus limited NaOHblue ppt
Fe(H2O)6 2+ plus limited NaOHGreen ppt. it turns brown with exposure in air
Cu(H2O)6 2+ plus limited NaOHpale blue ppt
memorize

Section 3

Question Answer
Al(H2O)6 3+ plus excess NaOHcolourless solution
Cr(H2O)6 3+ plus excess NaOHGreen solution
memorize

Section 4

Question Answer
Al(H2O)6 3+ plus limited NH3white ppt
Fe(H2O)6 3+ plus limited NH3brown ppt
Cr(H2O)6 3+ plus limited NH3green ppt
Co(H2O)6 2+ plus limited NH3blue ppt
Fe(H2O)6 2+ plus limited NH3green ppt. turn brown with exposure in air
Cu(H2O)6 2+ plus limited NH3Pale blue ppt
memorize

Section 5

Question Answer
Cr(H2O)6 3+ plus excess NH3purple solution
Co(H2O)6 2+ plus excess NH3straw/brown solution. turn brown/yellow with exposure in air
Cu(H2O)6 2+ plus excess NH3deep blue solution
memorize

Section 6

Question Answer
Al(H2O)6 3+ plus limited Na2CO3white ppt with effervescence
Fe(H2O)6 3+ plus limited Na2CO3brown ppt with effervescence
Cr(H2O)6 3+ plus limited Na2CO3green ppt with effervescence
Co(H2O)6 2+ plus limited Na2CO3pink/ purple ppt
Fe(H2O)6 2+ plus limited Na2CO3Green ppt
Cu(H2O)6 2+ plus limited Na2CO3blue/ green ppt
memorize

Section 7

Question Answer
VO2^+Yellow
VO^2+Blue
V3+Green
V2+Violet
memorize

Section 8

Question Answer
CrO4^2-yellow
Cr2O7^2-Orange
Cr3+Green
Cr2+Blue
memorize

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