# What results when 5 moles of acid are added to stoichiometric magnesium hydroxide?

Oct 18, 2016

$\frac{5}{2}$ moles of salt are produced.
$M g {\left(O H\right)}_{2} \left(s\right) + 2 H C l \left(a q\right) \rightarrow M g C {l}_{2} \left(a q\right) + 2 {H}_{2} O \left(l\right)$
The stoichiometry clearly says that each 2 moles of acid produces 1 mole of salt. If you use $5.0$ mol of acid, clearly $\frac{5.0}{2}$ mol salt are produced.