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More Types of Chemical Reactions • Combination • Decomposition • Combustion Single Displacement
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Types of Chemical Reactions - An Introduction to Chemistrypreparatorychemistry.info/Types_of_Chemical_Reactions.pdfMore Types of Chemical Reactions •Combination •Decomposition

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Page 1: Types of Chemical Reactions - An Introduction to Chemistrypreparatorychemistry.info/Types_of_Chemical_Reactions.pdfMore Types of Chemical Reactions •Combination •Decomposition

More Types of Chemical Reactions

• Combination• Decomposition• Combustion• Single Displacement

Page 2: Types of Chemical Reactions - An Introduction to Chemistrypreparatorychemistry.info/Types_of_Chemical_Reactions.pdfMore Types of Chemical Reactions •Combination •Decomposition

Combination Reactions

• In combination reactions, two or more elements or compounds combine to form one compound.

2Na(s) + Cl2(g) ® 2NaCl(s)

C(s) + O2(g) ® CO2(g)

MgO(s) + H2O(l) ® Mg(OH)2(s)

Page 3: Types of Chemical Reactions - An Introduction to Chemistrypreparatorychemistry.info/Types_of_Chemical_Reactions.pdfMore Types of Chemical Reactions •Combination •Decomposition

Decomposition Reactions

• In decomposition reactions, one compound is converted into two or more simpler substances.

Electric current2H2O(l) ® 2H2(g) + O2(g)

Electric current2NaCl(l) ® 2Na(l) + Cl2(g)

Page 4: Types of Chemical Reactions - An Introduction to Chemistrypreparatorychemistry.info/Types_of_Chemical_Reactions.pdfMore Types of Chemical Reactions •Combination •Decomposition

Combustion Reactions

• A combustion reaction is a redox reaction in which the reaction is very rapid and is accompanied by heat and usually light. The combustion reactions that you will be expected to recognize have oxygen, O2, as one of the reactants. C2H5OH(l) + 3O2(g)

® 2CO2(g) + 3H2O(l)

Page 5: Types of Chemical Reactions - An Introduction to Chemistrypreparatorychemistry.info/Types_of_Chemical_Reactions.pdfMore Types of Chemical Reactions •Combination •Decomposition

Combustion Products (1)

• When any substance that contains carbon is combusted (or burned) completely, the carbon forms carbon dioxide.

• When a substance that contains hydrogen is burned completely, the hydrogen forms water.

C3H8(g) + 5O2(g) ® 3CO2(g) + 4H2O(l)

Page 6: Types of Chemical Reactions - An Introduction to Chemistrypreparatorychemistry.info/Types_of_Chemical_Reactions.pdfMore Types of Chemical Reactions •Combination •Decomposition

Combustion Products (2)

• The complete combustion of a substance, like ethanol, C2H5OH, that contains carbon, hydrogen, and oxygen also yields carbon dioxide and water.

C2H5OH(l) + 3O2(g) ® 2CO2(g) + 3H2O(l)

Page 7: Types of Chemical Reactions - An Introduction to Chemistrypreparatorychemistry.info/Types_of_Chemical_Reactions.pdfMore Types of Chemical Reactions •Combination •Decomposition

Combustion Products (3)

• When any substance that contains sulfur burns completely, the sulfur forms sulfur dioxide gas. CH3SH(g) + 3O2(g)

® CO2(g) + 2H2O(l) + SO2(g)

Page 8: Types of Chemical Reactions - An Introduction to Chemistrypreparatorychemistry.info/Types_of_Chemical_Reactions.pdfMore Types of Chemical Reactions •Combination •Decomposition

Example

• Write the complete balanced equation for the complete combustion of liquid dimethyl sulfoxide, DMSO, which is a solvent that penetrates the skin without doing damage. It is used as a topical anesthetic and to aid the transfer of pharmaceuticals, such as antifungal compounds, through the skin. The condensed formula CH3SOCH3 can be used to describe DMSO.

Page 9: Types of Chemical Reactions - An Introduction to Chemistrypreparatorychemistry.info/Types_of_Chemical_Reactions.pdfMore Types of Chemical Reactions •Combination •Decomposition

Example

• CH3SOCH3(l) + O2(g) →

• CH3SOCH3(l) + O2(g) → CO2 (g) + H2O(l) + SO2 (g)

• CH3SOCH3(l) + 4O2(g) → 2CO2 (g) + 3H2O(l) + SO2 (g)

Page 10: Types of Chemical Reactions - An Introduction to Chemistrypreparatorychemistry.info/Types_of_Chemical_Reactions.pdfMore Types of Chemical Reactions •Combination •Decomposition

Single Displacement

Page 11: Types of Chemical Reactions - An Introduction to Chemistrypreparatorychemistry.info/Types_of_Chemical_Reactions.pdfMore Types of Chemical Reactions •Combination •Decomposition

Single Displacement Reaction

Zn(s) + CuSO4(aq) ®

Page 12: Types of Chemical Reactions - An Introduction to Chemistrypreparatorychemistry.info/Types_of_Chemical_Reactions.pdfMore Types of Chemical Reactions •Combination •Decomposition

Single Displacement Reaction Example

https://preparatorychemistry.com/Zn_CuSO4_Canvas.html

Page 13: Types of Chemical Reactions - An Introduction to Chemistrypreparatorychemistry.info/Types_of_Chemical_Reactions.pdfMore Types of Chemical Reactions •Combination •Decomposition

Single Displacement Reaction

Zn(s) + CuSO4(aq) ® ZnSO4(aq) + Cu(s)Zn(s) + Cu2+(aq) ® Zn2+(aq) + Cu(s)

oxidation: Zn(s) ® Zn2+(aq) + 2e−

reduction: Cu2+(aq) + 2e− ® Cu(s)

https://preparatorychemistry.com/Zn_CuSO4_Canvas.html