Above what Fe2+ concentration with Fe(OH)2 precipitate from a buffer solution that has a pH of...

Question:

Above what Fe2+ concentration with Fe(OH)2 precipitate from a buffer solution that has a pH of 9.52? The Ksp of Fe(OH)2 is 4.87*10-17.

Precipitation Reactions:

Precipitation in reactions mainly occurs if there is the formation of an insoluble salt; however, a precipitate can also be formed if the concentration of the solute is above its solubility.

Answer and Explanation: 1

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We are given that:

The pH of the buffer = 9.52

Ksp of {eq}Fe(OH)_2 = 4.87 \times 10^{-17} {/eq}

The dissociation equation for {eq}Fe(OH)_2 {/eq}...

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Precipitation Reactions: Predicting Precipitates and Net Ionic Equations

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Chapter 10 / Lesson 8
111K

Learn what a precipitate is and predict when it will form in an aqueous chemical reaction, usually a double-replacement reaction. Learn what an ionic equation is, how it differs from a net ionic equation and how to write a net ionic equation.


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