Na2HCO3 is baking soda and it's mixture with tartaric acid results in formation of baking powder. When baking powder is mixed with water then sodium bicarbonate reacts with tartaric acid to evolve CO2.

Reaction between Sodium Hydrogencarbonate and Tartaric Acid

When sodium hydrogencarbonate (NaHCO3) reacts with tartaric acid (C4H6O6), a chemical reaction occurs that results in the formation of several products. Let's examine the reaction in detail.

The Reaction:
The reaction between sodium hydrogencarbonate and tartaric acid can be represented by the following balanced chemical equation:

NaHCO3 + C4H6O6 → NaC4H5O6 + CO2 + H2O

Products Formed:
1. Sodium Tartrate (NaC4H5O6):
- Sodium tartrate is formed as a salt in the reaction.
- It is a white crystalline solid that is soluble in water.
- Sodium tartrate is commonly used in the food industry as an emulsifier and flavoring agent.

2. Carbon Dioxide (CO2):
- Carbon dioxide gas is produced as a byproduct of the reaction.
- It is a colorless and odorless gas that is heavier than air.
- Carbon dioxide is commonly used in carbonated beverages and can be detected by its effervescence.

3. Water (H2O):
- Water is also formed as a byproduct of the reaction.
- It is a colorless and odorless liquid that is essential for various biological processes.

Explanation of the Reaction:
The reaction between sodium hydrogencarbonate and tartaric acid is a type of acid-base reaction known as a neutralization reaction. Tartaric acid is a weak acid, while sodium hydrogencarbonate is a basic salt.

The sodium hydrogencarbonate acts as a base and reacts with the tartaric acid, which acts as an acid. The hydrogen ions (H+) from the acid react with the bicarbonate ion (HCO3-) from the base, resulting in the formation of water and carbon dioxide gas.

The sodium ion (Na+) from the base combines with the tartrate ion (C4H5O6-) from the acid to form sodium tartrate, which is a salt.

Conclusion:
In summary, when sodium hydrogencarbonate reacts with tartaric acid, the products formed are sodium tartrate, carbon dioxide, and water. This reaction is a neutralization reaction where the acid and base react to form a salt and water. The carbon dioxide gas produced gives rise to effervescence, which is often observed in baking when these ingredients are used together.