Types of chemical reactions
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Types of Chemical Reactions. Unit 5A. Synthesis Reaction. 2 or more substances combining to form a single compound A + B → AB N 2 (g) + 3H 2 (g) → 2NH 3 (g). Decomposition Reaction. A single reactant breaks down into simpler substances. CD → C + D 2H 2 O 2 (l) → 2H 2 O(l) + O 2 (g).

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Types of Chemical Reactions

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Types of chemical reactions

Types of Chemical Reactions

Unit 5A


Synthesis reaction

Synthesis Reaction

  • 2 or more substances combining to form a single compound

  • A + B → AB

  • N2(g) + 3H2(g) → 2NH3(g)


Decomposition reaction

Decomposition Reaction

  • A single reactant breaks down into simpler substances.

  • CD → C + D

  • 2H2O2(l) → 2H2O(l) + O2(g)


Single replacement reaction

Single- replacement Reaction

  • An element replaces another in an ionic compound.

  • E + FG → F + EG

  • L + JK → K + JL

  • 2Na(s) + MgCl2(aq) → Mg(s) + 2NaCl(aq)

  • 2F2(g) + 2FeBr3(aq) → 3Br2(l) + 2FeF2(aq)


Single replacement reactions

Single- replacement Reactions

  • Only occur if the element doing the replacing is more active (reactive) than the other element!


Types of chemical reactions

Activity Series of the Elements

Activity Series of the Elements

METALS NON-METALS (halogens)

Lithium Fluorine

Potassium Chlorine

Calcium Bromine

Sodium Iodine

Magnesium

Aluminum

Zinc

Chromium

Iron

Nickel

Tin

Lead

“Hydrogen”

Copper

Mercury

Silver

Platinum

Each element can replace all the other elements below it!


Double replacement reactions

Double- replacement Reactions

  • The cations of 2 ionic compounds exchange anions.

  • QR + ST → QT + SR

  • BaBr2(aq) + 2AgNO3(aq) → Ba(NO3)2(aq) + 2AgBr(s)


Combustion reaction

Combustion Reaction

  • A hydrocarbon is burned with oxygen to produce carbon dioxide, water and light/ heat.

  • CxHy + O2(g) → CO2(g) + H2O(g)

  • 2C4H10(l) + 13O2(g) → 8CO2(g) + 10H2O(g)

  • 2C2H5OH(l) + 7O2(g) → 4CO2(g) + 6H2O(g)


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