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Sodium Bicarbonate (Nahco3)

Sodium Bicarbonate (Nahco3)

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Sodium bicarbonate (NaHCO3), or sodium hydrogen carbonate, also known as baking soda and bicarbonate of soda, is a soluble white crystalline compound, with a slight alkaline taste resembling that of sodium carbonate. It is found in many mineral springs, in natural deposits in USA and is mainly produced by the Solvay process:
NaCl + NH3 + CO2 + H2O NaHCO3 + NH4Cl

Sodium bicarbonate, when exposed to an acid, releases carbon dioxide and water:

NaHCO3 + HCl NaCl + H2O + CO2 (gas)

Above 70°C, it gradually decomposes into sodium carbonate, water and carbon dioxide:

2 NaHCO3 Na2CO3 + H2O + CO2

It is used as an antacid to treat acid indigestion and heartburn. Sodium bicarbonate is also used to absorb moisture and odours; an open box can

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