# Question #a7896

Sep 22, 2016

${\text{Mg"_ ((s)) + 2"HCl"_ ((aq)) -> "MgCl"_ (2(aq)) + "H}}_{2 \left(g\right)} \uparrow$

#### Explanation:

Magnesium, $\text{Mg}$, will react with hydrochloric acid, $\text{HCl}$, to produce aqueous magnesium chloride, ${\text{MgCl}}_{2}$, and hydrogen gas, ${\text{H}}_{2}$, which bubbles out of solution.

magnesium + hydrochloric acid $\to$ magnesium chloride + hydrogen gas
${\text{Mg"_ ((s)) + 2"HCl"_ ((aq)) -> "MgCl"_ (2(aq)) + "H}}_{2 \left(g\right)} \uparrow$
Notice that the equation includes the states of the substances. A solid $\left(s\right)$ magnesium strip is added to hydrochloric acid, an aqueous solution $\left(a q\right)$.
The reaction produces aqueous magnesium chloride and gaseous $\left(g\right)$ hydrogen gas, which as you can see bubbles out of solution.