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.

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Nam D. Share
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.

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