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Will gypsum fizz from hydrochloric acid?

Updated: 8/9/2023
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βˆ™ 10y ago

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Gypsum (also known as CaSO3) and Hydrochloric acid (also known as muriatic acid) creates the following reaction:

CaSO3 + 2HCl ---> CaCl2 + H2O + SO2

You should see the CaSO3 dissolve in the HCl assuming the HCl is strong enough in molarity or % concentration.

Try it at home with some simple sidewalk chalk (the most common form of Gypsum) and HCl. Let it react and then boil away the water and sulfur dioxide to gain calcium chloride, a substance commonly used in home cheese making.

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βˆ™ 11y ago
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Anonymous

Lvl 1
βˆ™ 3y ago
when react gypsum with HCl precipated in solutin precipationΒ 
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βˆ™ 13y ago

Calcium chloride and sulfur dioxide gas, if it reacts at all. Since calcium sulfate dissolves less well than calcium chloride in most (all?) solvents, the equilibrium for the reaction favors formation of calcium sulfate crystals.

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βˆ™ 10y ago

Yes, it will fizz as a consequence of the calcium content. This is the reason that karstification processes take place in gypsum rocks as well.

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Q: Will gypsum fizz from hydrochloric acid?
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