Question

Question #a7896

Answer 1

`"Mg"_ ((s)) + 2"HCl"_ ((aq)) -> "MgCl"_ (2(aq)) + "H"_ (2(g)) uarr`

Explanation:

Magnesium, `"Mg"`, will react with hydrochloric acid, `"HCl"`, to produce aqueous magnesium chloride, `"MgCl"_2`, and hydrogen gas, `"H"_2`, which bubbles out of solution.

Your word equation will be

magnesium + hydrochloric acid `->` magnesium chloride + hydrogen gas

The balanced chemical equation that describes this single replacement reaction looks like this

`"Mg"_ ((s)) + 2"HCl"_ ((aq)) -> "MgCl"_ (2(aq)) + "H"_ (2(g)) uarr`

Notice that the equation includes the states of the substances. A solid `(s)` magnesium strip is added to hydrochloric acid, an aqueous solution `(aq)`.

The reaction produces aqueous magnesium chloride and gaseous `(g)` hydrogen gas, which as you can see bubbles out of solution.