### Solubility of Magnesium Hydroxide and the Effect of Adding Hydroxide IonsMagnesium hydroxide (Mg(OH)₂) is only very slightly soluble in water. The reaction by which it goes into solution is as follows:\[ \text{Mg(OH)}_2(\text{s}) \leftrightarrow \text{Mg}^{2+}(\text{aq}) + 2 \text{OH}^- (\text{aq}) \]When hydroxide ions (OH⁻) are added to the solution, it affects the equilibrium of this reaction according to Le Chatelier's principle.**Question:**What will happen if OH⁻ is added to the solution and why?1. Solid dissolves. OH⁻ concentration decreases. Reaction moves to the left.2. **Solid remains. OH⁻ concentration decreases. Reaction moves to the left.** (Correct answer)3. Solid remains. OH⁻ concentration decreases. Reaction moves to the right.4. Solid dissolves. OH⁻ concentration increases. Reaction moves to the right.5. Solid dissolves. OH⁻ concentration decreases. Reaction moves to the right.6. Solid remains. OH⁻ concentration increases. Reaction moves to the right.7. Solid remains. OH⁻ concentration increases. Reaction moves to the left.**Explanation:**When additional OH⁻ ions are introduced into the solution, the equilibrium will shift to counteract this change (Le Chatelier's Principle). The reaction will move left to decrease the concentration of OH⁻ ions by precipitating more $ \text{Mg(OH)}_2 $ as a solid. Therefore, the solid remains and the concentration of OH⁻ decreases as the system strives to reach a new equilibrium.

According to LeChatleir's principle, when a system at equilibrium is subjected to a change in either…

Answered: Magnesium hydroxide is only very…

Magnesium hydroxide is only very slightly soluble in water. The reaction by which it goes into solution is: Mg(O H)2(s) = Mg²+(a q) + 2 O H minus (a q)

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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