Question

WORKSHEET- MOLECULAR AND IONIC EQUATIONSWrite molecular, total-ionic and net-ionic equations for the following below. (Any soluble substance givenbelow is an aqueous solution)

Answer 1

Step-by-step explanation

Given compound

`\begin{gathered} \text{ Ammonium bromide }\rightarrow\text{ NH}_4Br \\ \text{ Sodium hydroxide }\rightarrow\text{ NaOH} \end{gathered}`

The next step is to write the molecular equation of the reaction between ammonium bromide and sodium hydroxide

`\begin{gathered} \text{ Molecular equation of the reaction;} \\ \text{ NH}_4Br_((aq))\text{ + NaOH}_((aq))\rightarrow NaBr_((aq))\text{ + NH}_(3(aq))\text{ + H}_2O_((l)) \end{gathered}`

The next step is to write the total ionic equation.

To write the total ionic equation, follow the steps below

1. Break the compounds that exist in the aqueous state into ions

`\begin{gathered} \text{ NH}_4Br\rightarrow\text{ NH}_4^++\text{ Br}^- \\ NaOH\text{ }\rightarrow\text{ Na}^+\text{ + OH}^- \\ NaBr\text{ }\rightarrow\text{ Na}^+\text{ + Br}^- \\ \end{gathered}`

2. Combine the ions together

`\text{ Total ionic equation; NH}_4^+\text{ + Br}^-+\text{ Na}^++\text{ OH}^-\rightarrow\text{ Na}^++\text{ Br}^-+\text{ NH}_(3(aq))\text{ + H}_2O`

The last step is to write the net ionic equation

To write the net ionic equation, you have to cancel ions that appear on the reactants sides, and the products side

`\begin{gathered} \text{ NH}_4^++\cancel{Br^-}+\cancel{Na^+}+\text{ OH}^-\rightarrow\cancel{Na^+}+\cancel{Br^-}+NH_{3(aq)\text{ }}+\text{ H}_2O_((l)) \\ \\ \text{ Net ionic equation : NH}_4^++\text{ OH}^-\rightarrow NH_{3(aq)\text{ }}+\text{ H}_2O(l) \end{gathered}`