Copper Cu Flashcards by Emma O'Donnell

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Q

what colour is [Cu(H2O)6] 2+ ?

A

pale blue

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Q

what colour is Cu(OH)2 ?

A

pale blue precipitate

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Q

what colour is [Cu(H2O)2(NH3)4] 2+ ?

A

dark blue

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Q

what colour is CuCl4 2- ?

A

yellow

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Q

what colour is CuI?

A

white precipitate

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Q

what colour is I2?

A

brown solution

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Q

what colour is Cu?

A

brown solid

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Q

what colour is CuSO4?

A

blue solution

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Q

what is [Cu(H2O)6] 2+ formed from?

A

CuSO4 • 5H2O (s)

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Q

what forms when NH3 is added drop wise to Cu2+ (aq)?

A

Cu(OH)2

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Q

what forms when excess NH3 is added to Cu2+ (aq)?

A

[Cu(H2O)2(NH3)4] 2+

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Q

what is CuCl4 2- formed from?

A

excess HCl and Cu 2+ ?

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Q

what forms when Cu2+ is reduced with I- ?

A

CuI and I2

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Q

what forms in the disproportionation of Cu+ ?

A

Cu and CuSO4

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