Question

is the compound soluble or insoluble in water?
al₂(so₃)₃
aluminum sulfite
insoluble (s)
soluble (aq)

Explanation:

According to solubility rules, sulfites (\(SO_{3}^{2 -}\)) are generally insoluble in water, with some exceptions for group 1 metal sulfites (like \(Na_{2}SO_{3}\)) and \(NH_{4}^{+}\) sulfite (\((NH_{4})_{2}SO_{3}\)). Aluminum (\(Al^{3+}\)) is not in the exception list.

Answer:

insoluble (s)