The answer is C

The answer is C.

When baking soda and vinegar are mixed together, a chemical reaction occurs. This is a vigorous reaction. Baking soda is called sodium bicarbonate, and has the chemical formula ##"NaHCO"_3"## Vinegar is a very dilute solution of acetic acid with the formula ##"CH"_3"COOH"##.

The word equation for the overall reaction is:

Solid sodium bicarbonate reacts with aqueous acetic acid to produce aqueous sodium acetate (##"CH"_3"COONa"##), liquid water, and carbon dioxide gas.

The chemical equation for the overall reaction is:

##"NaHCO"_3("s")+"CH"_3"COOH(aq)"####rarr####"CH"_3"COONa(aq)"+"H"_2"O(l)"+"CO"_2("g")"##