guy
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copper
I have this unknown copper solution and I tried to precipitate it with NaOH, but the solution just turned to dark bluish-purple color. What was the
copper compund?
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kryss
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Was in the colour of Copper sulphate to begin with?
Maybe it had ammonia in that intensifies the colour
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The_Davster
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If this was heated or heated up when adding the sodium hydroxide it may be copper oxide.
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Reverend Necroticus Rex
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What actually IS the bluish color that develops on from a copper compound+NH3? is it the amide?
The sun is shining on a brand new day
Blackened corpses burn where they were slain
Self-flagellation prompts him to confess, Bless me father, for I made this mess.
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The_Davster
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The blue color of a copper salt + ammonia is due to the formation of the complex tetraamine copper(II) [Cu(NH3)4]2+
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