The 5 Types Of Reactions

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The 5 Types Of Reactions

  1. 1. The 5 Types of Reactions Ms. Komperda March 22 nd & 23 rd We classify reactions into 5 categories so that we may more easily predict the products.
  2. 2. The 5 Types of Reactions Double Replacement Decomposition Single Replacement Synthesis Combustion
  3. 3. Synthesis Reaction Synthesis reaction – 2 substances combine to form a single product A + B  AB +  2Mg(s) + O 2 (g)  2MgO(s) Magnesium and oxygen combine to form magnesium oxide. 2H 2 (g)+ O 2 (g)  2H 2 O(l) Hydrogen and oxygen combine to form dihydrogen monoxide
  4. 4. Decomposition Reaction <ul><li>Decomposition reaction – A single compound is breaks down into 2 or more products. </li></ul><ul><li>AB  A + B </li></ul> + 2H 2 O 2 (aq)  O 2 (g)+ 2H 2 O(l) Hydrogen peroxide decomposes into oxygen gas and dihydrogen monoxide. 2NaCl(s)  2Na(s) + Cl 2 (g) Sodium chloride decomposes into sodium and chlorine gas.
  5. 5. Single Replacement Reaction <ul><li>Single Replacement reaction – A single element takes the place of another element in a compound. </li></ul><ul><li>A + BC  C + AB </li></ul>+  + AgNO 3 (aq) + Cu(s)  Ag(s) + CuNO 3 (aq) Copper replaces silver in silver nitrate to copper (I) nitrate and silver. Zn(s) + 2HCl(aq)  H 2 (g) + ZnCl 2 (aq) Zinc replaces hydrogen in hydrogen chloride to yield hydrogen gas and zinc chloride.
  6. 6. Double Replacement Reaction <ul><li>Double Replacement reaction – Elements in 2 compounds switch places to form 2 new compounds. </li></ul><ul><li>AB + CD  AD + CB </li></ul>+  + HCl(aq) + NaOH(aq)  HOH(l) + NaCl(aq) Hydroxide and chlorine switch places to hydrogen hydroxide (water) and sodium chloride Na 2 S(aq) + Zn(NO 3 ) 2 (aq)  2NaNO 3 (aq) + ZnS (s) Sulfur and nitrate switch places to form sodium nitrate and zinc sulfide.
  7. 7. Combustion Reaction <ul><li>Combustion reaction – A hydrocarbon (H and C) burn in oxygen to produce water and carbon dioxide. Heat is given off as energy. </li></ul><ul><li>C x H x + O 2  H 2 O + CO 2 + heat </li></ul>CH 4 (g) + 2O 2 (g)  2H 2 O (l) + CO 2 (g) Methane burns in oxygen to produce water and carbon dioxide. C 12 H 22 O 11 (s) + 12O 2 (g)  11H 2 O(l) + 12CO 2 (g) Sucrose burns in oxygen to produce water and carbon dioxide.

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