Types of Reactions Synthesis, Decomposition & Combustion

Types: Synthesis Example C + O 2 OO C +  OO C General: A + B  AB

Synthesis Reactions 1.element + element  binary compound Example: 2K(s) + Cl 2 (g)  2KCl(s) 2. nonmetallic oxide + water  acid Example: SO 3 (g) + H 2 O(l)  H 2 SO 4 (aq) 3.metallic oxide + water  base Example: CaO(s) + H 2 O(l)  Ca(OH) 2 (aq) 4. metal/non metal + oxygen  metal/nonmetal oxide Example: Fe(s) + O 2 (g)  Fe 2 O 3 (aq)

Predict the Products Na (s) + Cl 2 (g)  MgO (s) + H 2 O (l)  CO 2 (s) + H 2 O (l)  2NaCl (s) Mg(OH) 2(aq) H 2 CO 3(aq)

Types: Decomposition Example: NaCl General: AB  A + B  Cl Na Cl + Na Cl

Types: Decomposition Example 2HgO  O Hg O OO + General: AB  A + B

Decomposition Reactions 1.binary compound  element + element Example: 2H 2 O(l)  2H 2 (g) + O 2 (g) 2. carbonate  carbon dioxide + oxide Example: CaCO 3 (s)  CO 2 (g) + CaO(s)

Predict the Products K (s) + Cl 2 (g) H 2 (g) + O 2 (g) CO 2 (g) + CaO (s) N 2(g) + I 2 (g) KCl (s)  H 2 O (aq)  CaCO 3(aq)  NI 3 

Types: Combustion Example CH 4 + O 2  CO 2 +H 2 O OO C +  OO C General: Hydrocarbon + O 2  CO 2 +H 2 O H H H H O HH +

Combustion Reactions 1.element + oxygen  oxide Example: 2Mg(s) + O 2 (g)  2MgO(s) 2. hydrocarbon + oxygen  carbon dioxide gas + water vapour Examples: CH 4 (g) + 2O 2 (g)  CO 2 (g) + H 2 O(g) 3. hydrocarbon + (limited)oxygen  carbon dioxide + water vapour+ carbon monoxide + carbon Example: 2C 3 H 8 + 5O 2  2CO + 4C + 8H 2 O