How do you predict the product of a reaction?

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1 Answer
Hriman
Mar 1, 2018

#"2K"(s)+"Mg(OH)"_2(aq)->"Mg"(s)+"KOH"(aq)#
#"Cl"_2(g)+"MgI"_2(aq)->"MgCl"_2(aq)+"I"_2(s)#
#3"CuCl"_2(aq)+2"Na"_3"PO"_4(aq)->6"NaCl"(aq)+"Cu"_3("PO"_4)_2(s)#
#"BaCl"_2(aq)+"K"_2"SO"_4(aq)->2"KCl"(aq)+"Ba""SO"_4(s)#

Explanation:

For single replacement, the rule is the more reactive metal replaces the less reactive cation in the aqueous solution, and for double replacement, a solid, liquid or gas must be formed.

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