CO3 → H2O + CO2(g)Sodium bicarbonate reacts with acetic acid (found in vinegar) and presents a simple and showy demonstration of a chemical reaction. The products of the ensuing two-stage reaction are sodium acetate, water, and carbon dioxide:NaHCO3 + CH3COOH  →  CH3COONa + H2O + CO2(g)Sodium bicarbonate reacts with bases such as sodium hydroxide to form carbonates:NaHCO3 + NaOH  →  Na2CO3 + H2OSodium bicarbonate reacts with carboxyl groups in proteins to give a brisk effervescence from the formation of CO2. This reaction is used to test for the presence of carboxylic groups in protein.Thermal decomposition[සංස්කරණය]Above 70 °C, sodium bicarbonate gradually decomposes into sodium carbonate, water and carbon dioxide.  The conversion is fast at 200 °C:[1]2 NaHCO3 → Na2CO3 + H2O + CO2Most bicarbonates undergo this dehydration reaction.  Further heating converts the carbonate into the oxide (at around 1000 °C):Na2CO3 → Na2O  +  CO2These conversions are relevant to the use o