Question

Write a balanced molecular equation and a net ionic equation for the reaction that occurs when magnesium hydroxide reacts with a hydrochloric acid solution. Express your answers as chemical equations separated by a comma. Identify all of the phases in your answer.

Answer 1

Answer:

Balanced molecular equation and net ionic equation have been shown below.

Explanation:

$Mg(OH)_{2}$ is a weak base as it does not dissociate completely in water. HCl is a strong acid as it dissociates completely in water.

Reaction between $Mg(OH)_{2}$ and HCl is an example of acid-base reaction. Here a salt $MgCl_{2}$ is formed along with $H_{2}O$.

Balanced molecular equation:

$Mg(OH)_{2}(aq.)+2HCl(aq.)\rightarrow MgCl_{2}(aq.)+2H_{2}O(l)$

To write net ionic equation, spectator ions are to be removed from both side of total ionic equation. Here $Cl^{-}$ is the spectator ion.

Total ionic equation:

$Mg(OH)_{2}(aq.)+2H^{+}(aq.)+2Cl^{-}(aq.)\rightarrow Mg^{2+}(aq.)+2Cl^{-}(aq.)+2H_{2}O(l)$

Net ionic equation:

$Mg(OH)_{2}(aq.)+2H^{+}(aq.)\rightarrow Mg^{2+}(aq.)+2H_{2}O(l)$