# What occurs when Ba(NO_3)_2(aq) and Na_2SO_4(aq) are mixed?

Aug 31, 2017

Well, all nitrates are soluble.........

#### Explanation:

And all sodium salts are soluble...and most sulfates are soluble. Barium sulfate, however, is reasonably insoluble

And should barium nitrate, and sodium sulfate be mixed in aqueous solution, a $\text{metathesis}$ or $\text{partner exchange reaction}$ should occur, and insoluble barium sulfate should precipitate. How do I know this? How else but by experiment? And 20 or so years ago I did the same experiment as you did.

$B a {\left(N {O}_{3}\right)}_{2} \left(a q\right) + N {a}_{2} S {O}_{4} \left(a q\right) \rightarrow B a S {O}_{4} \left(s\right) \downarrow + 2 N a N {O}_{3} \left(a q\right)$

And we could write the net ionic equation, given that nitrate and sodium salts are all soluble......

$B {a}^{2 +} + S {O}_{4}^{2 -} \rightarrow B a S {O}_{4} \left(s\right) \downarrow$

None of this is a replacement for doing the experiment, and noting down your observations.