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Baking soda/Vinegar reaction

Question:
Explain the chemical reaction when baking soda and vineger are mixed.
 strountree

Answer:
Acid/base neutralization:
HC2H3O2 (acetic acid) + HCO3- (bicarbonate ion) ---->  H
        H2CO3 (carbonic acid)  +  C2H3O2- (acetate ion)
H2CO3  ----->  H2O + CO2
The foaming is the liberation of CO2 gas when carbonic acid dissociates.
-Joe Schultz

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