# Question #8f3a7

Mar 9, 2016

See explanation.

#### Explanation:

Calcium metal, $\text{Ca}$, will react with hydrochloric acid, $\text{HCl}$, in a single replacement reaction to produce aqueous calcium chloride, ${\text{CaCl}}_{2}$, and hydrogen gas, ${\text{H}}_{2}$.

This reaction takes place with both dilute and concentrated hydrochloric acid solutions.

The balanced chemical equation for this reaction looks like this

${\text{Ca"_text((s]) + 2"HCl"_text((aq]) -> "CaCl"_text(2(aq]) + "H}}_{\textrm{2 \left(g\right]}} \uparrow$

The resulting solution, which contains calcium cations, ${\text{Ca}}^{2 +}$, and chloride anions, ${\text{Cl}}^{-}$, is colorless. The hydrogen gas will bubble out of solution.

You can check out the reaction here: