lecture16%28chapt9%29 - Chapter 9 Calculations from...

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1 Chapter 9 Calculations from Chemical Equations Types of Chemical Reactions: Combination Reactions A+B AB – Metal OR nonmetal + O 2 ____ oxide – Metal + nonmetal salt – Metal oxide + water metal hydroxide – Metal oxide + water metal hydroxide Decomposition Reactions AB A+B – Metal oxides – Carbonates and H-carbonates – others Replacement Reactions Single- A+BC B+AC OR A+BC C+AB – Metal + salt metal + salt – Halogen + halide salt halogen + halide salt – Metal + acid hydrogen + salt – Metal + water hydrogen + metal hydroxide or metal oxide Double- AB+CD AD+CB – Neutralization of an acid or base salt + water – Metal oxide + acid salt + water – Formation of an insoluble precipitate – Formation of a gas
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2 Classify each as a combination, decomposition, single replacement, or double displacement reaction: 4Fe(s) + 3O 2 (g) 2Fe 2 O 3 (s) Combination; combustion Mg(s)+2AgNO 3 (aq) Mg(NO 3 ) 2 (aq)+2Ag(s) single replacement CuCO 3 (s) CuO(s)+CO 2 (g) decomposition NaOH(aq) + HCl(aq) NaCl(aq) + H 2 O double displacement C 4 H 8 (g) + 6O 2 (g) 4CO 2 (g) + H 2 O(g) combustion ZnCO 3 (s) CO 2 (g) + ZnO(s) decomposition Al 2 (SO 4 ) 3 (aq) + 6KOH(aq) 2Al(OH) 3 (s) + 3K 2 SO 4 (aq) double replacement Pb(s) + O 2 (g) PbO 2 (s) combination; combustion
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3 Predict the products: Mg(s) + Cl 2 (g) combination reaction Mg(s) + Cl 2 (g) MgCl 2 (s) HBr(g) decomposition HBr(g) H 2 (g)+ Br 2 (g) Mg(s) + Zn(NO 3 ) 2 (aq) single replacement Mg(s) + Zn(NO 3 ) 2 (aq) Mg(NO 3 ) 2 (aq) + Zn(s) Predict the products: K 2 S(aq) + Pb(NO 3 ) 2 (aq) double displacement K 2 S(aq) + Pb(NO 3 ) 2 (aq) 2KNO 3 (aq) + PbS(g) C 2 H 6 (g) + O 2 (g) combustion C 2 H 6 (g) + O 2 (g) CO 2 (g) + H 2 O(g) 2C 2 H 6 (g) + 7O 2 (g) 4CO 2 (g) + 6H 2 O(g)
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4 How do you approach a chemistry problem? Don’t panic!
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lecture16%28chapt9%29 - Chapter 9 Calculations from...

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