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Write the balanced chemical equation for each of these reactions. Include phases. When aqueous...

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Write the balanced chemical equation for each of these reactions. Include phases.

When aqueous sodium hydroxide is added to a solution containing lead(II) nitrate, a solid precipitate forms.

However, when additional aqueous hydroxide is added the precipitate redissolves forming a soluble {eq}[Pb(OH)_4]^2-(aq) {/eq} complex ion.

Precipitation Reactions

In some cases, mixing two completely soluble salts together creates a salt that is insoluble. In these cases, the insoluble salt will immediately principate from the solution, forming a solid that drifts down to the bottom of the container or remains suspended as a colloid. This occurs because for the ions involved in the solid, they are more stable as a solid than dissolved in the solvent, despite the reduction of entropy and the loss of solvent-solute interactions.

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Precipitation Reactions: Predicting Precipitates and Net Ionic Equations

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Chapter 10 / Lesson 9
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Study precipitate reactions. Determine precipitate solubility according to solubility rules. Learn to write ionic equations by following a molecular reaction.


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