High concentration of iron (III) ions, Fe3+, cause hard water. Write a balanced equation to show how iron ions can be removed using sodium carbonate, NaCO3.

You meant Na2CO3 for NaCO3.

2Fe^3+ + 3Na2CO3 ==> Fe2(CO3)3 + 6Na^2+

To remove iron (III) ions using sodium carbonate (NaCO3), you will need to follow these steps:

Step 1: Determine the balanced equation for the reaction between iron (III) ions and sodium carbonate.

The balanced equation is as follows:
2Fe3+ (aq) + 3CO3^2- (aq) -> Fe2(CO3)3 (s)

Step 2: Interpret the equation.

The equation above shows that for every two iron (III) ions (Fe3+) in aqueous solution, three carbonate ions (CO3^2-) react to form solid iron (III) carbonate (Fe2(CO3)3).

Step 3: Understand the reaction.

In this reaction, sodium carbonate (Na2CO3) is added to an aqueous solution containing iron (III) ions (Fe3+). The iron (III) ions react with carbonate ions (CO3^2-) from sodium carbonate to form a precipitate of iron (III) carbonate (Fe2(CO3)3).

Step 4: Confirm the equation's balance.

Ensure that the equation is balanced by checking that the number of atoms of each element is equal on both sides of the equation.

On the left side of the equation:
2 Fe atoms
6 O atoms
6 Na atoms
9 C atoms

On the right side of the equation:
2 Fe atoms
3 C atoms
9 O atoms

Since the number of atoms is the same on both sides, the equation is balanced.

To write a balanced equation showing how iron ions can be removed using sodium carbonate (Na2CO3), we need to consider the reaction between the iron (III) ions (Fe3+) and sodium carbonate.

The chemical equation for the reaction can be represented as follows:

Fe3+ + 3Na2CO3 → Fe(CO3)3 + 6Na+

In this equation, 1 iron (III) ion (Fe3+) reacts with 3 molecules of sodium carbonate (Na2CO3), producing 1 molecule of iron (III) carbonate (Fe(CO3)3) and 6 sodium ions (Na+).

The equation is balanced in terms of both atoms and charges. On the left-hand side, there are three sodium atoms, which are balanced by the six sodium ions on the right-hand side. Similarly, there are three carbonate (CO3) groups on the left side and three on the right side, ensuring balance. The charges on both sides of the equation are also balanced, with a net charge of +3 on the left side and +3 on the right side.

This balanced equation represents the reaction between iron (III) ions and sodium carbonate, which results in the formation of iron (III) carbonate, removing iron (III) ions from the solution.