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Reaction of Carbonates and Bicarbonates with Dil. Sulphuric Acid

Why when baki...

Question

Why when baking soda (sodium hydrogen carbonate) is treated with vinegar (acetic acid), a brisk effervescence is observed ?

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Solution

Vinegar is chemically acetic acid and its chemical formula is CH₃COOH. Baking soda, on the other hand is sodium bicarbonate, which is a mild base. Its chemical formula is NaHCO₃. Hence, when baking soda is added to vinegar, neutralisation reaction takes place and sodium acetate is formed along with water and carbon dioxide. Thus, brisk effervescence is observed due to the formation of carbon dioxide gas. Following is the chemical equation for the reaction
CH₃COOH + NaHCO₃ â†’ CH₃COONa + H₂O + CO₂

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