What is the classification for this reaction? so3 (g) + h2o (l) → h2so4 (aq)?

The given reaction is the combination reaction.

There are 6 different types of reaction namely, Combination , Decomposition , Single Displacement , Double Displacement , Combustion, and  Redox reactions.

The reaction given is :

In this reaction by the combination of two reactants, there is the formation of a single product. This type of reaction is the combination reaction. Thus, the given reaction is the combination reaction.

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i think? ?

answer; the numbers of valence electrons in the acetic acid molecule (ch3co2h) is 24;