How does magnesium react with hydrochloric acid?

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Answer 1 · 2017-03-23T14:20:36

$"Magnesium metal + hydrochloric acid"$
$rarr$ $"magnesium chloride + dihydrogen gas"$

Magnesium metal is oxidized to $Mg^(2+)$ .

$Mg(s) rarr Mg^(2+) + 2e^(-)$

Protium ion is REDUCED to dihydrogen gas:

$H^+ + e^(-) rarr 1/2H_2(g)$

And thus the net ionic equation is, $Mg(s) + 2H^(+) rarr Mg^(2+) + H_2(g)uarr$

Overall:

$Mg(s) + 2HCl(aq) rarr MgCl_2(aq) + H_2(g)uarr$

Are all these equations balanced with respect to both MASS and CHARGE? If not they should be!