Calcium carbonate reacts with hydrochloric acid to form calcium chloride, water and carbon dioxide. The reaction between these two compounds requires two parts hydrochloric acid to one part calcium chloride. This reaction is fairly rapid and energetic at high concentrations, in large part due to the high affinity of calcium ions for chloride ions.Know More
Both of these compounds are ionic, with a hydrogen ion bound to a chloride ion in hydrochloric acid and a calcium ion bound to a carbonate group in calcium carbonate. The carbonate group is actually covalently bonded carbon and oxygen, but the calcium carbonate as a whole is ionic. Two chloride ions bond to one calcium ion. The high affinity of the hydrogen ions to oxygen splits apart the carbonate group, covalently bonding with one oxygen ion to form a water molecule. The carbonate group, stripped of one oxygen ion, becomes a neutral carbon dioxide molecule.
Stomach acid is hydrochloric acid, so calcium carbonate is commonly used as an antacid because the products of this reaction are harmless to humans. The body uses a somewhat similar compound, bicarbonate, to neutralize stomach acid on its own. Hydrochloric acid is also a component of acid rain. This can cause heavy erosion in limestone, which is largely composed of calcium carbonate.Learn more about Solutions & Mixtures
The chemical reaction between hydrochloric acid and magnesium produces magnesium chloride and hydrogen gas. The balanced chemical equation for this reaction is Mg (s) + 2 HCl (aq) produces MgCl2 (aq) + H2 (g), where the letter "s" stands for solid, "g" is gas and "aq" represents an aqueous solution.Full Answer >
Aluminum reacts with hydrochloric acid. Aluminum is extremely reactive and undergoes several reactions. However, if one were to put a piece of aluminum foil in a beaker of hydrochloric acid, there may not be a reaction because of the oxide coating electrolytically applied during production. The reaction will occur with pure aluminum shavings.Full Answer >
According to Colorado State University, hydrochloric acid in the stomach kills any bacteria in food. It both attacks proteins directly and activates the pepsin enzyme, which is even more powerful in breaking down proteins. Springfield Technical Community College notes that the acid is released both on food detection and ingestion.Full Answer >
Metals to the left of hydrogen in the electrochemical series react with hydrochloric acid. These elements include lithium, potassium, calcium, sodium, magnesium, aluminum, zinc, iron and lead. Metals to the right of hydrogen in the electrochemical series, such as copper, silver and gold, do not react.Full Answer >