What is the net ionic equation for Fe ( NO 3 ) 2 ( aq ) + Na 2 CO 3 ( aq ) ⟶ CaCO3 ( s ) + 2 NaNO 3 ( aq )

Explanation:

1. Write the balanced molecular equation(given):

Notice that I replaced Fe(NO₃)₂ with Ca(NO₃)2 because Fe does not appear in the products.

2. Write the aqueous ionic compounds in form of ions:

3. Write the overall ionic equation

In the balanced molecular molecular equation, substitute the ionic compounds with the corresponding ions:

Ca²⁺(aq) + 2NO₃⁻(aq) + 2Na⁺ (aq) + CO₃²⁻(aq) →

                                                         CaCO₃(s) + 2NO₃⁻(aq) + 2Na⁺(aq)

4. Write the net ionic equation

Remove the spectator ions (those that appear equal on both sides):

5.6⋅10−^19  j

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