Respuesta :
Answer: [tex]BaSO_4[/tex]
Explanation:
A precipitation reaction is a special type of double displacement reaction.
[tex]BaSO_4[/tex] is an insoluble compound as it is does not dissolve in water, and thus formed as a soild or a precipitate.
The sulfate ion [tex]SO_4{2-}[/tex] form insoluble compounds when combined with [tex]Ba^{2+}[/tex].
The chlorate ion [tex]ClO_3^-[/tex] form soluble compounds with all positive ions.
The chromate ion [tex]CrO_4^{2-}[/tex] form insoluble compounds with all ions but soluble with [tex]Ca^{2+[/tex].
The sulfide ion [tex]S^{2-}[/tex] form insoluble compounds with all ions except when combined with [tex]Na^+[/tex] or [tex]NH_4^+[/tex]
