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(C) $1$. Copper $(I)$ ions are unstable in aqueous solution and undergo disproportionation: $2Cu^+ (aq) \rightarrow Cu^{2+} (aq) + Cu (s)$. This state

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Copper $(II)$ oxide is a red powder.

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(C) $1$. Copper $(I)$ ions are unstable in aqueous solution and undergo disproportionation: $2Cu^+ (aq) \rightarrow Cu^{2+} (aq) + Cu (s)$. This statement is true.$2$. Copper $(I)$ can be stabilized by forming insoluble complexes like $[CuCl_2]^-$ or $[Cu(CN)_2]^-$. This statement is true.$3$. Copper $(II)$ oxide $(CuO)$ is a black powder,whereas Copper $(I)$ oxide $(Cu_2O)$ is a red powder. Therefore,the statement that Copper $(II)$ oxide is a red powder is false.

Which of the following statements regarding copper salts is not true?

Similar Questions

Choose the correct statements from the following:
$A$. $Mn_2O_7$ is an oil at room temperature.
$B$. $V_2O_4$ reacts with acid to give $VO^{2+}$ ions.
$C$. $CrO$ is a basic oxide.
$D$. $V_2O_5$ does not react with acid.
Choose the correct answer from the options given below:

Assertion: $KMnO_4$ is purple in colour due to charge transfer.
Reason: There is no electron present in $d$-orbitals of Manganese in $MnO_4^-$.

$MnO^{-}_4$ is of intense pink colour,though $Mn$ is in $(+7)$ oxidation state,it is due to

Stainless steel contains $..........$ $\%$ $Cr$.

Corundum is

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