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How can you predict a single replacement reaction?
A single replacement reaction occurs when an element reacts with a compound to produce a new element and a new compound.
A single replacement reaction occurs when an element reacts with a compound to produce a new element and a new compound.
There are two types of :
A metal replaces another metal that is in solution: ##"A" + "BC" → "B" + "AC"##Example: ##"Zn" + "CuCl"_2→ "Cu" + "ZnCl"_2##
A halogen replaces another halogen that is in solution: ##"A" + "BC" → "C" + "BA"##Example: ##"Br"_2 + "2KI" → "I"_2+ "2KBr"##
To determine whether a given single replacement will occur, you must use an “Activity Series” table.
If the metal or the halogen is above the element it will replace based on the activity series, a single displacement reaction will occur.
Examples:
##"Mg" + "2HCl" → "H"_2 + "MgCl"_2## (##"Mg"## is above ##"H"##)
##"Cl"_2 + "2NaBr" → "Br"_2 + "2NaCl"## (##"Cl"## is above ##"Br"##)
##"Cu" + "AlCl"_3→ "no reaction"## (##"Cu"## is below ##"Al"##)
The video below summarizes an experiment conducted to compare the activities of three metals (##"Mg, Cu"## and ##"Zn"##).
