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1. 2. 3. 4. One Uno Ichi Washid. Types of Reactions. SYNTHESIS REACTION PATTERN: A + B → AB EXAMPLE: 2Mg (s) + O 2 (g) → 2MgO (s) DECOMPOSITION REACTION PATTERN: AB → A + B EXAMPLE:

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Presentation Transcript
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One

Uno

Ichi

Washid

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SYNTHESIS REACTION

PATTERN:

A + B → AB

EXAMPLE:

2Mg(s) + O2 (g) → 2MgO (s)

DECOMPOSITION REACTION

PATTERN:

AB→ A + B

EXAMPLE:

2H2O(g) → 2H2(g) + O2(g)

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SINGLE REPLACEMENT REACTION

PATTERN:

A + BC → AC + B

EXAMPLE:

2Al(s) + 3CuCl2(aq) → 2AlCl3(aq) + 3Cu(s)

DOUBLE REPLACEMENT REACTION

PATTERN:

AB + CD → AD + CB

EXAMPLE:

BaCl2(aq)+ Na2SO4(aq) → BaSO4(s) +2NaCl (aq)

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Acid – Base Reaction

HX + MOH MX + H2O

acid base salt water

Example:

H2SO4(aq) + NaOH(aq) Na2SO4(aq) + H2O(l)

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COMBUSTION REACTION

Pattern:

CXHYOZ + O2 → CO2 + H2O

Example:

2C2H3OH(l) + 5O2(g)→ 4CO2(g) + 4H2O(l)

C3H8(g)) + 5O2(g)→ 3CO2(g) + 4H2O(g)

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Na(s) + Cl2 → NaCl(s)

Synthesis

ZnNO3(aq) + Mg(s) → Zn(s) + MgNO3(aq)

Single Replacement

CH4(g) + O2(g) → CO2(g) + H2O(l)

Combustion

NaCl(aq) + AgNO3(aq) → NaNO3(aq) + AgCl(s)

Double Replacement

driving forces
Driving Forces
  • Predict whether a reaction will work– chemical changes that tend to make reactions go in the direction of the arrow
types of driving forces
Types of Driving forces:
  • 1. Formation of a precipitate (solid) (see solubility rules)
  • Example:
  • AgNO3(aq) + KCl(aq) AgCl(s)+KNO3(aq)
  • 2. Formation of water
  • Example:
  • HCl(aq)+NaOH(aq) H2O(l)+NaCl(aq)
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3. Formation of a gas:

  • Example:
  • 2HgO(s)2Hg(l)+O2(g)
  • 4. Transfer of Electrons – which is called Oxidation-Reduction or Redox
  • Example:
  • 2H2(g)+O2(g)2H2O(g)
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Al + Fe2O3 Fe + Al2O3

Single Replacement

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