QuestionApril 24, 2025

Milk of magnesia is a common treatment for heartburn and contains the active ingredient magnesium hydroxide. What is the COMPLETE ionic equation for the reaction of magnesium hydroxide and hydrochloric acid? A H^+(aq)+OH^-(aq)arrow H_(2)O(l) B HCl(aq)+Mg(OH)_(2)(s)arrow MgCl_(2)(aq)+H_(2)O(l) C H^+(aq)+Cl^-(aq)+Mg(OH)_(2)(s)arrow Mg^2+(aq)+Cl^-(aq)+H_(2)O(l) D 2H^+(aq)+2Cl^-(aq)+Mg(OH)_(2)(s)arrow Mg^2+(aq)+2Cl^-(aq)+2H_(2)O(l)

Milk of magnesia is a common treatment for heartburn and contains the active ingredient magnesium hydroxide. What is the COMPLETE ionic equation for the reaction of magnesium hydroxide and hydrochloric acid? A H^+(aq)+OH^-(aq)arrow H_(2)O(l) B HCl(aq)+Mg(OH)_(2)(s)arrow MgCl_(2)(aq)+H_(2)O(l) C H^+(aq)+Cl^-(aq)+Mg(OH)_(2)(s)arrow Mg^2+(aq)+Cl^-(aq)+H_(2)O(l) D 2H^+(aq)+2Cl^-(aq)+Mg(OH)_(2)(s)arrow Mg^2+(aq)+2Cl^-(aq)+2H_(2)O(l)
Milk of magnesia is a common treatment for heartburn and contains the active ingredient magnesium hydroxide. What is the COMPLETE ionic equation for the reaction of magnesium hydroxide and hydrochloric acid? A H^+(aq)+OH^-(aq)arrow H_(2)O(l) B HCl(aq)+Mg(OH)_(2)(s)arrow MgCl_(2)(aq)+H_(2)O(l) C H^+(aq)+Cl^-(aq)+Mg(OH)_(2)(s)arrow Mg^2+(aq)+Cl^-(aq)+H_(2)O(l) D 2H^+(aq)+2Cl^-(aq)+Mg(OH)_(2)(s)arrow Mg^2+(aq)+2Cl^-(aq)+2H_(2)O(l)

Solution
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Answer

D 2H^{+}(aq)+2Cl^{-}(aq)+Mg(OH)_{2}(s)\rightarrow Mg^{2+}(aq)+2Cl^{-}(aq)+2H_{2}O(l) Explanation 1. Identify the reactants and products Magnesium hydroxide (Mg(OH)_2) reacts with hydrochloric acid (HCl) to form magnesium chloride (MgCl_2) and water (H_2O). 2. Write the balanced molecular equation Mg(OH)_2(s) + 2HCl(aq) \rightarrow MgCl_2(aq) + 2H_2O(l) 3. Break down into ions for complete ionic equation Mg(OH)_2 is solid, so it remains as Mg(OH)_2(s). HCl dissociates into H^+(aq) and Cl^-(aq). MgCl_2 dissociates into Mg^{2+}(aq) and 2Cl^-(aq). Water remains as H_2O(l). 4. Write the complete ionic equation Combine all ions and compounds: 2H^+(aq) + 2Cl^-(aq) + Mg(OH)_2(s) \rightarrow Mg^{2+}(aq) + 2Cl^-(aq) + 2H_2O(l)

Explanation

1. Identify the reactants and products<br /> Magnesium hydroxide ($Mg(OH)_2$) reacts with hydrochloric acid ($HCl$) to form magnesium chloride ($MgCl_2$) and water ($H_2O$).<br /><br />2. Write the balanced molecular equation<br /> $Mg(OH)_2(s) + 2HCl(aq) \rightarrow MgCl_2(aq) + 2H_2O(l)$<br /><br />3. Break down into ions for complete ionic equation<br /> $Mg(OH)_2$ is solid, so it remains as $Mg(OH)_2(s)$. $HCl$ dissociates into $H^+(aq)$ and $Cl^-(aq)$. $MgCl_2$ dissociates into $Mg^{2+}(aq)$ and $2Cl^-(aq)$. Water remains as $H_2O(l)$.<br /><br />4. Write the complete ionic equation<br /> Combine all ions and compounds: $2H^+(aq) + 2Cl^-(aq) + Mg(OH)_2(s) \rightarrow Mg^{2+}(aq) + 2Cl^-(aq) + 2H_2O(l)$
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