# Spectator Ions

## Homework Statement

Barium hydroxide is soluble in water. What are the spectator ions in the reaction of a dilute solution of barium hydroxide with hydro-sulfuric acid?

## The Attempt at a Solution

The chemical equation is:
$Ba(OH)_{2(aq)}+H_{2}SO_{4(aq)} \rightarrow BaSO_{4(s)}+2H_{2}O_{(l)}$
In my notes it says sulfates are soluble except for a few, Ba is one of them.
The ionic equation is:
$Ba^{2+}+6O^{2-}+4H^{+}+S^{2-} \rightarrow BaSO_{4(s)}+4H^{+}+2O^{2-}$
Not sure on the ionic equation...
Any help because I thought the spectators are the ones that cancel out?

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Borek
Mentor
Check your notes on dissociation - how do the bases dissociate? How do the acids dissociate?

There's nothing about that in my notes :\

Borek
Mentor