Where is the gas coming from when you mix vinegar and baking soda?
The gas coming off is mostly or all carbon dioxide CO2. There is some evidence that when commercial baking soda is reacted with some vinegars, a very tiny (almost insignificant amount) of CO (carbon monoxide) may be co-generated. Again, if it is true, the amounts of CO are meaninglessly low. For all intensive purposes, the gas produced is CO2, the standard by which all greenhouse gasses are measured.
