Consider the equilibrium reaction below. [Cu(H₂O)6]²+ (aq) + 4 Cl¯ (aq) ⇒ [CuC14]² (aq) + 6 H₂O (1) light blue orange A test tube contains a solution of Cu(NO3)2 which is light blue. What is the major species present in the solution responsible for the color?

Chemistry
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Chapter1: Chemical Foundations
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**Equilibrium Reaction Exploration**

Consider the equilibrium reaction below:

\[ \text{[Cu(H}_2\text{O)}_6^{2+} \, (\text{aq}) + 4 \, \text{Cl}^- \, (\text{aq}) \rightleftharpoons \text{[CuCl}_4]^{2-} \, (\text{aq}) + 6 \, \text{H}_2\text{O} \, (\text{l}) \]

- The \(\text{[Cu(H}_2\text{O)}_6^{2+}\) complex appears light blue.
- The \(\text{[CuCl}_4]^{2-}\) complex appears orange.

**Problem Statement:**

A test tube contains a solution of \(\text{Cu(NO}_3)_2\) which is light blue. What is the major species present in the solution responsible for the color?

**Explanation:**

The light blue color observed in the solution is primarily due to the presence of the \(\text{[Cu(H}_2\text{O)}_6^{2+}\) complex ion, which occurs when copper(II) ions are hydrated in aqueous solution.
Transcribed Image Text:**Equilibrium Reaction Exploration** Consider the equilibrium reaction below: \[ \text{[Cu(H}_2\text{O)}_6^{2+} \, (\text{aq}) + 4 \, \text{Cl}^- \, (\text{aq}) \rightleftharpoons \text{[CuCl}_4]^{2-} \, (\text{aq}) + 6 \, \text{H}_2\text{O} \, (\text{l}) \] - The \(\text{[Cu(H}_2\text{O)}_6^{2+}\) complex appears light blue. - The \(\text{[CuCl}_4]^{2-}\) complex appears orange. **Problem Statement:** A test tube contains a solution of \(\text{Cu(NO}_3)_2\) which is light blue. What is the major species present in the solution responsible for the color? **Explanation:** The light blue color observed in the solution is primarily due to the presence of the \(\text{[Cu(H}_2\text{O)}_6^{2+}\) complex ion, which occurs when copper(II) ions are hydrated in aqueous solution.
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