13. Chemical reactions can be written as chemical equations. For example, when mixing vinegar and baking soda, the equation is:
CH3COOH NaHCO3 --> CO2 NaCO3 H2O
(vinegar) (baking soda) -> (carbon dioxide) (sodium carbonate) (water)
This equation is not balanced but it can give the students an idea of the reactants and products in the reaction.
Actually, it produces sodium acetate CH3CO2Na, not sodium carbonate (whose correct formula is Na2CO3 anyway), and, yes, the correct equation does balance.