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

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

Step-by-step 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)`