CHM1011 - Chemistry I - S1 2025
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Cu(OH)2(s)
CuSO4(aq)
Cu(s)
CuCl2(aq)
CuO(s)
Upon addition of clear, colourless sulfuric acid solution, the black powder completely dissolved into the solution.
Upon the addition of sodium hydroxide solution to the copper(II) chloride solution, dark blue precipitate immediately started to form. After addition of all the sodium hydroxide, the entire system was an opaque dark blue suspension.
Upon addition of water to the green/blue copper(II) chloride (and slight shaking), a light blue transparent solution was formed.
2CuO(s) + 2H2SO4(aq) → 2CuSO5(aq) + 2H2(g)
| Heat | ||
| Cu(OH)2(s) | → | CuO(s) + H2O(g) |
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