Thursday 41207 Aday

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Thursday 4/12/07A-day

• Chemical Equations (Ch 11)

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Paper work

• Stuff to collect

• Stuff to distribute

• Balancing Practice 8.1

• nothing

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Tomorrow

• There is a balancing quiz on Friday. It is NOT
  open note or homework.
• After the quiz you will work on the General
  Chemistry Synthesis, Decomposition, and Single
  Replacement Reactions worksheet by yourself. It
  is NOT group work.
• You must bring your book to school tomorrowthere
  will be no class copies available to you.

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Objectives for CH 11

• Write a word equation and a formula equation for
  a given chemical reaction.
• Balance a formula equation by inspection.
• Classify a reaction as a synthesis,
  decomposition, single-displacement,
  double-displacement, or combustion reaction.
• Predict the products for chemical reactions.
• Use an activity series to predict whether a given
  reaction will occur and what the products will be.

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Predicting Products

• Synthesis (a.k.a. Composition)
• N2 H2
• N2 H2 NH3
• Decomposition
• Ga2(CO3)3(s)
• Ga2(CO3)3(s) Ga2O3(s) CO2(g)
• Fe(ClO3)2(s)
• Fe(ClO3)2(s) FeCl2(s) 3O2(g)
• Cu(OH)2(s)
• Cu(OH)2(s) CuO(s) H2O(g)
• Single Replacement
• Mg(s) NaCl(aq)
• Mg(s) NaCl(aq) NO RXN

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Predicting Products

• Double Replacement (a.k.a. Ionic Rxns)
• Cu(ClO3)2 (aq) HNO3(aq)
• Cu(ClO3)2 (aq) HNO3(aq) Cu(NO3)2(aq)
  HClO3(aq)
• NO RXN no solid formed.
• You might need a Solubility Chart.
• NaOH(aq) HCl(aq)
• NaOH(aq) HCl(aq) NaCl (aq) H2O(l)
• H1(aq) OH1-(aq) H2O(l)

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Predicting Products

• Double Replacement (a.k.a. Ionic Rxns)
• Hydrochloric acid aluminum sulfite
• HCl (aq) Al2(SO3)3(aq) SO2(g) H2O(l)
  AlCl3(aq)
• Sulfuric acid sodium carbonate
• H2SO4 (aq) Na2CO3(aq) CO2(g) H2O(l)
  Na2SO4(aq)

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Predicting Products

• Combustion Rxns
• C8H18(g) O2(g)
• C8H18 (g) O2(g) CO2(g) H2O(g)
• C6H12O6(g) O2(g)
• C6H12O6 (g) O2(g) CO2(g) H2O(g)

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Activity Series

• List of elements that will help you to decide if
  a reaction actually takes place.
• Activity Series
• The higher element always replaces the lower
  element in single replacement reactions.
• Read the information on the Activity Series when
  deciding if elements react with acids, steam, or
  cold water.
• Also read the Activity Series when deciding if an
  element will form an oxide or not.
• Lastly, reference the Activity Series when
  deciding if an oxide of an element will
  decompose.

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Predicting Products using the Activity Series

• Single Replacement Rxns
• HCl(aq) Cu(s)
• HCl (aq) Cu(s) NO RXN
• H2O(g) Na(s)
• H2O(g) Na(s) NaOH(aq) H2(g)
• ZnCl2(aq) K(s)
• ZnCl2(aq) K(s) KCl(aq) Zn(s)

11
Predicting Products using the Activity Series

• Co(s) O2(g)
• Co(s) O2(g) CoO(s)
• Pt(s) O2(g)
• Pt(s) O2(g) NO RXN
• Mg(s) O2(g)
• Mg(s) O2(g) MgO(s)

12
Predicting Products using the Activity Series

• K2O(s) H2(g) heated
• K2O(s) H2(g) NO RXN
• NiO(s) H2(g) heated
• NiO(s) H2(g) Ni(s) H2O(g)
• Ag2O(s) heated
• Ag2O(s) Ag(s) O2(g)