# When the barium chloride test is performed on a known solution of 0.1 M Na_2SO_4, what do you expect the observed results to be?

Mar 4, 2016

I expect to see a white precipitate.

#### Explanation:

If you add a solution of barium chloride to a solution of sodium sulfate, barium sulfate forms.

Barium sulfate is insoluble in water. It appears as a white precipitate.

The reaction is a double displacement reaction.

The equation for the reaction is

$\text{BaCl"_2("aq") + "Na"_2"SO"_4("aq") → "BaSO"_4("s") + "2NaCl(s)}$

The net ionic reaction is

"Ba"^(2+)("aq") + "SO"_4^"2-"("aq") → "BaSO"_4("s")