# When concentrated aqueous solutions of Ba(OH)_2 and Li_2SO_4 are mixed, a precipitate forms. How do you write balanced molecular, total ionic, and net ionic equations for this chemical reaction?

Mar 21, 2016

$\text{Barium hydroxide + lithium sulfate "rarr" barium sulfate + lithium hydroxide}$

#### Explanation:

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

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

And net, because hydroxide and lithium ions are simply along for the ride:

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

Is mass conserved? Is charge conserved in each equation? If not, they should be!