Single displacement reactions
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Single Displacement Reactions. Single Displacement Reactions. An element takes the place of another element that is in a compound Could be a metal replacing a metal or a non-metal replacing a non-metal General formulas: A + BC  AC + B (A and B are metals)

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Single Displacement Reactions

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Single displacement reactions

Single Displacement Reactions


Single displacement reactions1

Single Displacement Reactions

  • An element takes the place of another element that is in a compound

  • Could be a metal replacing a metal or a non-metal replacing a non-metal

  • General formulas:

    • A + BC  AC + B (A and B are metals)

    • A + BC  BA + C (A and C are nonmetals)‏

    • +  +


Example 1 metals

Example 1 (metals)

  • Cu(s) + 2AgNO3(aq)  Cu(NO3)2(aq) + Ag(s)

  • This reaction does not go in reverse! Why can’t Ag replace Cu? It is because of the reactivity of the metals.

  • The “Activity Series” is a list of elements that is organized according to their chemical reactivity.


Activity series for metals

Activity Series for Metals

  • Lithium

  • Potassium

  • Calcium

  • Sodium

  • Magnesium

  • Aluminium

  • Zinc

  • Chromium

  • Iron

  • Nickel

  • Tin

  • Lead

  • Hydrogen

  • Copper

  • Mercury

  • Silver

  • Platinum

  • Gold

Most reactive

Least reactive


Example 2 metals

Example 2 (metals)

  • Use the activity series to predict if the following single displacement reaction occurs

    Al(s) + NiBr3(aq) __________

  • Write the balanced chemical equation


Hydrogen

Hydrogen???

  • Notice that hydrogen is on the activity series and it is not a metal!

  • Hydrogen may be displaced from most acids by all metals above it

  • Hydrogen may only be displaced from water (at room temp.) by those above magnesium


Example 3 hydrogen

Example 3 (hydrogen)

  • Use the activity series to predict if the following single displacement reaction occurs

    Ag(s) + HBr(aq) __________

  • Write the balanced chemical equation, if reaction occurs


Example 4 hydrogen

Example 4 (hydrogen)

  • Use the activity series to predict if the following single displacement reaction occurs

    K(s) + H2O(l) __________

  • Write the balanced chemical equation, if reaction occurs


Example 5 nonmetals

Example 5 (nonmetals)

  • Non-metals are negatively charged, so it can be replaced with only another non-metal.

  • F2(g) + 2NaI(s)  I2 (s) + 2NaF (s)

  • There is a separate activity series for halogens


Activity series for nonmetals

Activity Series for Nonmetals

  • fluorine

  • chlorine

  • bromine

  • iodine

Most reactive

Least reactive


Example 6 nonmetals

Example 6 (nonmetals)

  • Use the activity series to predict if the following single displacement reaction occurs

    Br2(g) + NaCl(aq) __________

  • Write the balanced chemical equation, if it does occur


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