# How to write an equation to show dissociation?

## Drain cleaner is typically a solution of sodium hydroxide. Some antacids major component is magnesium hydroxide. Write equations to show the dissociation of each base when placed into water.

Mar 9, 2018

Please refer to the explanation below.

#### Explanation:

I would say we can write the following equations like this.

For an aqueous solution of sodium hydroxide, we have

$N a O H \left(a q\right) r i g h t \le f t h a r p \infty n s N {a}^{+} \left(a q\right) + O {H}^{-} \left(a q\right)$

While for magnesium hydroxide, we got:

$M g {\left(O H\right)}_{2} \left(a q\right) r i g h t \le f t h a r p \infty n s M {g}^{2 +} \left(a q\right) + 2 O {H}^{-} \left(a q\right)$

Remember that dissociation reactions are usually reversible, so I would suggest that it is safe to place the equilibrium $\left(r i g h t \le f t h a r p \infty n s\right)$ sign in the chemical equations.