What is a double replacement reaction?

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Answer 1 · 2015-01-28T16:27:03

A double replacement reaction occurs between two ionic compounds and produces two new ionic compounds as products.

An example is:
#FeCl_3(aq) + NaOH(aq) -> Fe(OH)_3(s) + NaCl(aq)

Positive ions: $Fe^(3+) and Na^+$
Negative ions: $Cl^- and OH^-$

Note that positive ions must pair with negative ions in compounds!

Here is a video which discusses this reaction in more detail.

Hope this helps!