In a simple chemical equation, there are reactants and the products. An arrow is used to separate them. In this problem, we have:
Hydrogen acetate + Sodium bicarbonate --> Hydrogen hydroxide +
Sodium acetate + Carbon dioxide
Next thing is to show the word equation into chemical equation by converting the formula name into chemical formula.
HC2H3O2 + NaHCO3 --> H2O + NaC2H3O2 + CO2
notes: hydrogen hydroxide is more familiar called as water, and Hydrogen acetate is commonly known as acetic acid.
Finally, you make sure that the equation is balanced. You can balance the equation by making sure that both sides of the equation contain equal number of atoms.