Linked Questions
10 questions linked to/from Why copper(I) is unstable in aqueous medium?
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Why is Cu(II) more stable than Cu(I)? [duplicate]
Seeing Copper has an exceptional electron filling in its valence shell(4s1 3d10), the way I see it is that on +1, a d10 configuration should be more stable and hence easier to attain than a d9 which ...
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The stability of the cupric and cuprous ions [duplicate]
My teacher told me that $\ce{Cu^2+}$ is more stable than $\ce{Cu+}$ in solution, but why? I think $\ce{Cu+}$ is $\ce{[Ar] 3d^10 }$ ,$\ce{Cu^2+}$ is $\ce{[Ar] 3d^9}$, why is $\ce{Cu^2+}$ more stable ...
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Cupric and cuprous copper [duplicate]
Copper has two chlorides: $\ce{CuCl2}$ and $\ce{CuCl}.$
Copper reacts directly with chlorine to form a copper(II) chloride. Why doesn't it form copper(I) chloride? Is it because $\ce{CuCl2}$ is more ...
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Why do diluted sulfuric acid and hydrogen peroxide etch copper only when chloride ions are present?
I've mixed 30 ml 10% sulfuric acid with 20 ml 3% hydrogen peroxide and put a drop of this solution onto copper foil. The solution quickly removed the oxide layer from the copper but did not dissolve ...
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Colour intensity of transition metal complexes
Even though they are both $\mathrm{d^7}$ complexes, the colour of $\ce{[Co(H2O)6]^2+}$ is pale whereas that of $\ce{[CoCl4]^2-}$ is more intense. Does the octahedral or tetrahedral geometry matter in ...
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What happens when potassium iodide is added to a copper (II) salt?
$$\ce{Cu^2+ + KI -> ??}$$
I thought of this reaction:
$$\ce{Cu^2+ + 2KI -> CuI2 + 2K+}$$
But since $\ce{CuI2}$ doesn't exist, the $\ce{I-}$ ions must reduce $\ce{Cu^2+}$ to $\ce{CuI}$ and ...
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Stability of 3d metal fluorides and iodides in different oxidation states
I read that the fluorides of 3d metals in lower oxidation states, e.g. $\ce{VF2}$, $\ce{TiF2}$, and $\ce{CuF}$ are thermodynamically unstable. For example, $\ce{CuF}$ disproportionates to $\ce{Cu + ...
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Why do Cu⁺ ions spontaneously form copper metal and Cu²⁺ ions in solution?
The standard electrode potentials for three reactions involving copper and copper ions are:
$$
\begin{align}
\ce{Cu^2+(aq) + e- &-> Cu+(aq)} &\quad E^\circ &= \pu{+0.15 V} \\
\ce{Cu^2+(...
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How do you determine the charge of the metal ion in a single replacement reaction? [closed]
Say we have a simple single replacement reaction between a salt and a metal
$$\ce{2 AgNO3 + Cu -> Cu(NO3)2 + 2 Ag}$$
We know in normal circumstances, silver always has a $+1$ charge, and in normal ...
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stability of Cu(II), Cu(I) and Zn(II) ion
I would like to ask about the stability of $\ce{Cu^{2+}}$ and $\ce{Cu^{+}}$ and also $\ce{Cu^{2+}}$.
$\ce{Cu^{2+}}$ has a configuration of $(3\mathrm{d})^9$ but $\ce{Cu^{+}}$ has a configuration of $(...
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