H2CO3 is formed first, which is unstable and decomposes to give CO2 and water.
bicarbonate
foam
An acid.
An acid
The acetic acid in the vinegar reacts with the sodium bicarbonate to produce carbonic acid, which rapidly decomposes into carbon dioxide gas (CO2) and water. The gas created is mostly carbon dioxide.
The sodium bicarbonate gives off carbon dioxide (CO2)
Sodium Bicarbonate (Baking Soda) Chemical Formula being (Na)HCO3
When carbon reacts with oxygen to form carbon dioxide, carbon dioxide is the product of the reaction.
When sodium bicarbonate reacts with dilute hydrochloric acid they produce carbon dioxide (CO2)
The mild acid in vinegar reacts with the bicarbonate in baking soda to release carbon dioxide.
Baking soda or Sodium bicarbonate it reacts with other components to release carbon dioxide, that helps dough "rise".
The CO2 reacts with the H2O to create H2CO3 (Carbonic acid) Carbon dioxide + Water ---> Carbonic acid ----->Bicarbonate ion---> Hydrogen ion