A compound decomposition reaction occurs, producing sodium acetate and carbonic acid, which is unstable and will continue to decompose into carbon dioxide and water.

The gas produced when baking soda and white vinegar are mixed is: carbon dioxide gas. The main ingredient in baking soda is sodium bicarbonate (NaHCO?) and the main ingredient in white vinegar is acetic acid (CH3COOH).

Reaction formula: CH3COOH +NaHCO3 ==CH3COONa +CO2↑ +H2O

Expanded information:

Characteristics of sodium bicarbonate:

Sodium bicarbonate is white crystal, or opaque monoclinic system of fine crystals. Specific gravity 2.15.

Odorless, non-toxic, salty taste, soluble in water, slightly soluble in ethanol.

Dissolved in 10 parts of water at 25℃, dissolved in 12 parts of water at about 18℃. Its aqueous solution is slightly alkaline due to hydrolysis, stable at room temperature, easy to decompose by heat, gradually decompose above 50 ℃, completely lose carbon dioxide at 270 ℃, no change in dry air, slow deliquescence in humid air.

Characteristics of acetic acid:

Boiling point (℃): 117.9

Freezing point (℃): 16.6

Relative density (water as 1): 1.050

Viscosity (mPa.s): 1.22 (20 ℃)

20 ℃ at the vapors pressure (KPa): 1.5

Appearance and Odor: colorless liquid with pungent acetic acid smell.

Solubility: soluble in water, ethanol, ether, carbon tetrachloride and glycerin and other organic solvents.

Compatible materials: strongly corrosive to metals after dilution, 316# and 318# stainless steel and aluminum can be used as good structural materials.

Reference link: Baidu Encyclopedia-Sodium Bicarbonate

Reference link: Baidu Encyclopedia-Acetic Acid