Answer :
Answer:
Na₂CO₃(aq) + CaSO₄(aq) ⟶ CaCO₃(s) + Na₂SO₄(aq)
Explanation:
We can use the criss-cross method to work out the formulas of the compounds.
The steps are
- Write the symbols of the anion and cation.
- Criss-cross the numbers of the charges to become the subscripts of the other ion.
- Write the formula with the new subscripts.
- Divide the subscripts by their highest common factor.
- Omit all subscripts that are 1.
When we use this method, the formula for the compound formed from Na⁺ and CO₃²⁻ becomes Na₂CO₃ .
The table below lists the formulas for the possible combinations.
[tex]\begin{array}{lcc}& \textbf{CO}_{3}^{2-} & \textbf{SO}_{4}^{2-}\\\textbf{Na}^{+} & \text{Na$_{2}$CO$_{3}$} & \text{Na$_{2}$SO}_{4}\\\textbf{Ca}^{2+} & \text{CaCO}_{3} & \text{CaSO$_{4}$}\\\end{array}[/tex]