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+ Inorganic chemistry
+ Chemical reactions
+ Water
+ Acids
+ Chemistry
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Kat A.

What kind of reaction is this? H2O + SO3 -> H2SO4?

Alison Adams  Follow

To classify a reaction, look at the numbets and types of reactants and products.

This reaction has 2 reactants forming one product. That is characteristic of a combination reaction, also called an addition reaction.

Note that “one product” means one formula on the product side. It may have a coefficient greater than one to balance the teaction.

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Bogart Marilyn  Follow

This kind of reaction is called a hydration reaction.

Hydration involves addition of water molecules to another substance to form a single, new compound.

SO3, sulphur trioxide, is an acidic oxide and it reacts with and dissolves in water to form sulphuric acid, H2SO4.

SO3 is the anhydride of H2SO4, as the removal of H2O from the latter is supposed to yield the former.

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