Two numbered test tubes contain sodium carbonate and sodium sulfate solutions.

Two numbered test tubes contain sodium carbonate and sodium sulfate solutions. Make a plan for identifying substances. Write the corresponding reaction equations in molecular and ionic form.

Let’s write down the formulas of the compounds: sodium carbonate – Na2CO3, sodium sulfate – Na2SO4
To recognize these salts, you can take a soluble magnesium salt, for example, magnesium nitrate Mg (NO3) 2, since the resulting precipitate in the form of magnesium carbonate MgCO3 indicates that sodium carbonate is in the first test tube. Then in the second – sodium sulfate.
Molecular equation:
Na2CO3 + Mg (NO3) 2 = 2NaNO3 + MgCO3
In ionic:
2Na (+) + CO3 (2-) + Mg (2+) + 2NO3 (-) = 2Na (+) + 2NO3 (-) + MgCO3
Mg (2+) + CO3 (2-) = MgCO3