question 19 (10 points) if aqueous solutions of mg(c2h3o2)2 and lioh are mixed, which insoluble precipitate…

question 19 (10 points) if aqueous solutions of mg(c2h3o2)2 and lioh are mixed, which insoluble precipitate is formed? a) ch3oh b) lic2h3o2 c) mg(oh)2 d) mgoh e) li(c2h3o2)2

question 19 (10 points) if aqueous solutions of mg(c2h3o2)2 and lioh are mixed, which insoluble precipitate is formed? a) ch3oh b) lic2h3o2 c) mg(oh)2 d) mgoh e) li(c2h3o2)2

Answer

Explanation:

Step1: Identify reactants' ions

$\text{Mg(C}_2\text{H}_3\text{O}_2\text{)}_2$ dissociates into $\text{Mg}^{2+}$ and $\text{C}_2\text{H}_3\text{O}_2^-$; $\text{LiOH}$ dissociates into $\text{Li}^+$ and $\text{OH}^-$.

Step2: Predict double displacement products

Products are $\text{LiC}_2\text{H}_3\text{O}_2$ (from $\text{Li}^+$ and $\text{C}_2\text{H}_3\text{O}_2^-$) and $\text{Mg(OH)}_2$ (from $\text{Mg}^{2+}$ and $\text{OH}^-$).

Step3: Check solubility

$\text{LiC}_2\text{H}_3\text{O}_2$ is soluble (all lithium salts and acetates are soluble); $\text{Mg(OH)}_2$ is insoluble (most hydroxides except Group 1 and some others).

Answer:

C) Mg(OH)2