Does concentrated sulfuric acid react with water?
| September 23, 2021 | education
The reaction of water (H2O) and sulfuric acid (H2SO4) is very exothermic and produces heat.
If water is added to concentrated sulfuric acid, it can boil. You should always add acid to water, not water to acid. This precaution is necessary due to the relative density of the two fluids. Water is less dense than sulfuric acid, which means water will float on top of this acid.
When H2SO4 dissolves in water, it dissociates to form ions. H + ions react with water molecules to form hydrogen ions.
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