Question

question 46 (1 point) ✓ saved
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consider mixing an aqueous solution of fecl₃ with an aqueous solution of koh. what is the insoluble
product for this precipitation reaction?
fecl₃ (aq) + koh (aq) → ??
fecl₃
fe(oh)₃
kclo
kcl
koh

Explanation:

This is a double - displacement reaction. In a double - displacement reaction \(AB + CD
ightarrow AD+CB\). Here, \(FeCl_{3}(aq)+KOH(aq)\) will react as follows:
The cations (\(Fe^{3 +}\) and \(K^{+}\)) exchange anions (\(Cl^{-}\) and \(OH^{-}\)).
The products are \(Fe(OH)_{3}\) and \(KCl\).
According to solubility rules:

• All potassium salts (\(K^{+}\) salts) are soluble. So \(KCl\) is soluble.
• Hydroxide salts (\(OH^{-}\) salts) of transition metals are generally insoluble. \(Fe\) is a transition metal, and \(Fe(OH)_{3}\) is insoluble.

Answer:

\(Fe(OH)_{3}\)