**Equilibrium Reaction:**Consider the equilibrium reaction below:\[ \text{[Cu(H}_2\text{O)}_6\text{]}^{2+} \text{(aq)} + 4 \text{Cl}^- \text{(aq)} \rightleftharpoons \text{[CuCl}_4\text{]}^{2-} \text{(aq)} + 6 \text{H}_2\text{O (l)} \]- The complex \(\text{[Cu(H}_2\text{O)}_6\text{]}^{2+}\) is light blue.- The complex \(\text{[CuCl}_4\text{]}^{2-}\) is orange.**Experiment Details:**2. To the test tube in step 1, 1 M HCl is added dropwise. The solution changes to an orange color. a. **Major Species Responsible for Color:** - The major species responsible for the orange color in the solution is \(\text{[CuCl}_4\text{]}^{2-}\). b. **Effect of HCl in Terms of Le Châtelier’s Principle:** - Adding HCl increases the concentration of \(\text{Cl}^-\) ions in the solution. According to Le Châtelier’s principle, the system will respond by shifting the equilibrium to the right to counteract this change, forming more \(\text{[CuCl}_4\text{]}^{2-}\) and resulting in the orange color.

The question is based on the concept of Le-chatlier principle.It States that when a system at equilibrium is subject to change such that its equilibrium position is disturbed, it shifts in a particular direction so as to minimise the effect of that change.A) orange colour is due to formation of copper chloride complex; [CuCl4]2- B) on adding hydrochloric acid, chloride concentration increases due to common ion effect of chloride ions which are present on reactant side.So, equilibrium shifts on product side to maintain equilibrium concentration of chloride ions thereby producing an orange colour solution.Therefore, Le-chatlier principle has been explained above in context of the observation.

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Consider the equilibrium reaction below. [Cu(H₂O)6]²+ (aq) + 4 Cl (aq) light blue Aube in the solution Jution Co [CuC14]² (aq) + 6 H₂O (1) orange ... for the Color! 2. To the test tube in 1, 1 M HCl is added dropwise. The solution changes to an orange color. a. What is the major species present in the solution responsible for the color? b. Explain the effect of HC1 in terms of Le Châtelier's principle. ont

Consider the equilibrium reaction below. [Cu(H₂O)6]²+ (aq) + 4 Cl (aq) light blue Aube in the solution Jution Co [CuC14]² (aq) + 6 H₂O (1) orange ... for the Color! 2. To the test tube in 1, 1 M HCl is added dropwise. The solution changes to an orange color. a. What is the major species present in the solution responsible for the color? b. Explain the effect of HC1 in terms of Le Châtelier's principle. ont

Chemistry

10th Edition

ISBN:9781305957404

Author:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste

Publisher:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste

Chapter1: Chemical Foundations

Section: Chapter Questions

Problem 1RQ: Define and explain the differences between the following terms. a. law and theory b. theory and...

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Question

**Equilibrium Reaction:**

Consider the equilibrium reaction below:

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

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

**Experiment Details:**

2. To the test tube in step 1, 1 M HCl is added dropwise. The solution changes to an orange color.

a. **Major Species Responsible for Color:**

- The major species responsible for the orange color in the solution is \(\text{[CuCl}_4\text{]}^{2-}\).

b. **Effect of HCl in Terms of Le Châtelier’s Principle:**

- Adding HCl increases the concentration of \(\text{Cl}^-\) ions in the solution. According to Le Châtelier’s principle, the system will respond by shifting the equilibrium to the right to counteract this change, forming more \(\text{[CuCl}_4\text{]}^{2-}\) and resulting in the orange color.

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