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Which products are formed when hydrochloric acid reacts with sodium hydrogen carbonate?
Sodium chloride, water, and carbon dioxide
Sodium carbonate, water, and oxygen
Sodium chloride and hydrogen gas
Sodium hydroxide and carbon dioxide
Sodium chloride, water, and carbon dioxide
When an acid reacts with a metal hydrogen carbonate, it produces a corresponding salt, water, and carbon dioxide gas. In this specific reaction, hydrochloric acid reacts with sodium hydrogen carbonate to form sodium chloride, water, and carbon dioxide.
When an acid reacts with a metal hydrogen carbonate, it produces a corresponding salt, water, and carbon dioxide gas. In this specific reaction, hydrochloric acid reacts with sodium hydrogen carbonate to form sodium chloride, water, and carbon dioxide.
Think of adding baking soda to vinegar; the fizzing you see and hear is the rapid production of carbon dioxide gas escaping the mixture, just like in this reaction.
A-M-S-W-C: Acids + Metal Hydrogen Carbonate тЖТ Salt + Water + Carbon dioxide.
HCl+NaHCO3тАЛтЖТNaCl+H2тАЛO+CO2тАЛтЖС тАФ The balanced chemical equation for the reaction.
The reaction follows the general chemical equation: Acid+Metal┬аHydrogen┬аCarbonateтЖТSalt+Water+Carbon┬аDioxide. The hydrogen ions (H+) from the hydrochloric acid react with the bicarbonate ion (HCO3тИТтАЛ) to form carbonic acid (H2тАЛCO3тАЛ), which is unstable and immediately decomposes into water (H2тАЛO) and carbon dioxide (CO2тАЛ).
The reaction is a neutralisation reaction where the metal hydrogen carbonate acts as a base.
The evolution of carbon dioxide gas can be confirmed by passing it through lime water, which turns milky.
Sodium hydrogen carbonate is commonly known as baking soda.
Useful for producing CO2тАЛ in laboratories.
Used in fire extinguishers to release CO2тАЛ.
Used in the food industry for baking (leavening agent).
Option B is incorrect because metal hydrogen carbonates do not release oxygen.
Option C is incorrect because hydrogen gas is released when acids react with reactive metals, not carbonates.
Option D is incorrect because sodium hydroxide is a base and would neutralize the acid differently.
A is correct тАФ Hydrochloric acid reacts with sodium hydrogen carbonate to produce sodium chloride, water, and carbon dioxide gas.
Remember that all metal carbonates and metal hydrogen carbonates react with acids to liberate carbon dioxide; this is a standard test for carbonate identification in salt analysis.