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Author: Subject: CuO and NaOH
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[*] posted on 18-8-2018 at 16:01
CuO and NaOH


Fairly beginner question: In what conditions does sodium hydroxide react with copper oxide to make sodium cuprate? For example, what temperature and concentration does the NaOH have to be?



List of materials made by ScienceMadness.org users:
https://docs.google.com/spreadsheets/d/1nmJ8uq-h4IkXPxD5svnT...
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Elements Collected: H, Li, B, C, N, O, Mg, Al, Si, P, S, Fe, Ni, Cu, Zn, Ag, I, Au, Pb, Bi, Am
Last Acquired: B
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Foeskes
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[*] posted on 18-8-2018 at 17:11


I've heard it reacts with copper hydroxide to dissolve it but I've never tried it.

Quote:

Copper(II) anions are most common, especially the chlorocuprates, such as trichlorocuprate(II) [CuCl3]−, tetrachlorocuprate(II) [CuCl4]2− and pentachlorocuprate(II) [CuCl5]3−.[1] The light blue solid sodium tetrahydroxycuprate is well known; it is prepared by heating cupric hydroxide with concentrated sodium hydroxide.[4] Cu(OH)2 + 2 NaOH → Na2Cu(OH)4

From Wikipedia
Potassium cuperate can be made by reacting potassium peroxide with copper oxide at a high heat in a atmosphere of pure oxygen.
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j_sum1
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18-8-2018 at 17:58

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