Complete The Balanced Overall Ionic Equation For Sodium Iodide Dissolving In Water.

The three types of equations that are used to represent the chemical reaction are as follows:

1. Molecular equation

2. Total ionic equation

3. Net ionic equation

The reactants and products remain in undissociated form in molecular equation. In the case of total ionic equation, all the ions that are dissociated and present in the reaction mixture are represented while in the case of net or overall ionic equation only the useful ions that participate in the reaction are represented.

You are watching: Complete the balanced overall ionic equation for sodium iodide dissolving in water.

The steps to write the overall ionic reaction are as follows:

Step 1. Write the molecular equation for the reaction with the phases in the bracket.

In the reaction, NaI reacts with


to form NaOH and HI. The balanced molecular equation of the reaction is as follows:


Step2. Dissociate all the compounds with the aqueous phase to write the total ionic equation. The compounds with solid and liquid phase remain same. The total ionic equation is as follows:


Step3. The common ions on both the sides of the reaction get cancelled out to get the overall ionic equation.


Therefore, the overall ionic equation obtained is as follows:


Learn more:

1. Balanced chemical equation:


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Oxidation and reduction reaction: details:

Grade: High School

Subject: Chemistry

Chapter: Chemical reaction and equation

Keywords: overall ionic equation, NaI, NaOH, H2O, HI, H+, I-, aqueous phase, dissociate, molecular equation, reaction, sodium iodide, water.

* NaI (aq) → Na⁺ (aq) + I⁻(aq)


1) The formula of sodium iodide is NaI

2) Due to the great electronegativities of sodium (Na) and iodine (I), sodium iodide is a ionic compound.

3) Ionic compounds dissociate in water to produce the corresponding ions. In this case, since I has the greatest electronegativity, the ions are Na⁺ and I⁻ .

4) When you write the ionic equation, you have to take into account, the number of ions per unit formula and the phases.

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So, in this case, the species are in water solutions, this is aqueous solutions. Then you use the symbol aq to indicate the aqueous phase.


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