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# Concept: Identifying Redox Reactions

CHEM-PM7YYW

The process of producing large quantities of magnesium can be carried out in a series of three reaction steps shown below.

$$(1)\quad\quad Mg{Cl}_{2} (aq) + Ca{(OH)}_{2} (aq) \xrightarrow [ ]{ } Mg{(OH)}_{2} (s) + Ca{Cl}_{2} (aq)$$
$$(2)\quad\quad Mg{(OH)}_{2} (s) + 2HCl (aq) \xrightarrow [ ]{ } Mg{Cl}_{2} (aq) + 2{H}_{2}O (l)$$
$$(3)\quad\quad Mg{Cl}_{2} (l) \xrightarrow [ ]{ } Mg (l) + {Cl}_{2} (g)$$

Which step(s) involve(s) a redox reaction? Select ALL that apply.

A

Step 1.

B

Step 2.

C

Step 3.

D

None of the above.