You added concentrated hydrochloric acid to well C1. Select the answer that best
ID: 820530 • Letter: Y
Question
You added concentrated hydrochloric acid to well C1. Select the answer that best explains how your observations tell you which way the equilibrium is shifting
1. The disappearance of the precipitate, solid magnesium hydroxide, from the mixture indicates the equilibrium is shifting to the right. This increases the concentration of hydroxide ions in order to replace those that reacted with the added acid. The production of hydroxide ions resulted in the dissolution of the solid magnesium hydroxide.
2. The disappearance of the precipitate, solid magnesium hydroxide, from the mixture indicates the equilibrium is shifting to the left. This decreases the concentration of hydroxide ions in order to replace those that reacted with the added acid. The production of hydroxide ions resulted in the dissolution of the solid magnesium hydroxide.
3. The disappearance of the precipitate, solid magnesium hydroxide, from the mixture indicates the equilibrium is shifting to the right. This decreases the concentration of hydroxide ions in order to replace those that reacted with the added acid. The production of hydroxide ions resulted in the dissolution of the solid magnesium hydroxide.
4. The appearance of the precipitate, solid magnesium hydroxide, from the mixture indicates the equilibrium is shifting to the left. This decreases the concentration of hydroxide ions in order to replace those that were added with the added acid. The production of hydroxide ions resulted in the creation of the solid magnesium hydroxide.
Explanation / Answer
2. The disappearance of the precipitate, solid magnesium hydroxide, from the mixture indicates the equilibrium is shifting to the left. This decreases the concentration of hydroxide ions in order to replace those that reacted with the added acid. The production of hydroxide ions resulted in the dissolution of the solid magnesium hydroxide.
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