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Displacement Reactions

Displacement Reactions. Words for your glossary: Single displacement Metal activity series Halogen activity series Double displacement http://www.youtube.com/watch?v=5eWmMC7f9to&feature=fvwrel. Single Displacement Reactions.

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Displacement Reactions

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  1. Displacement Reactions • Words for your glossary: • Single displacement • Metal activity series • Halogen activity series • Double displacement • http://www.youtube.com/watch?v=5eWmMC7f9to&feature=fvwrel

  2. Single Displacement Reactions • A metal can replace a metal (+) OR a nonmetal can replace a nonmetal (-). • ____________________________________________ A + BC  AC + B (if A is a metal)OR A + BC  BA + C (if A is a nonmetal) (remember the cation always goes first!) When H2O splits into ions, it splits into H+ and OH- (not H+ and O-2 !!)

  3. Single Displacement Reactions • A metal replacing a metal cation in a compound: ________________________ • Zn (s) + Fe(NO3)(aq)  Zn(NO3)2(aq) + Fe2(s) • A non-metal (usually a halogen) replacing an anion in a compound: ___________________ • Cl2(g) + CaBr2(aq)  CaCl2(aq) + Br2(l)

  4. http://www.youtube.com/watch?v=hKtynbVtMKc

  5. Single Displacement Reactions

  6. Single Displacement Reactions • When analyzing single displacement reactions, use the following guidelines: • 1. • 2. • 3.

  7. Single Replacement Reactions • Write and balance the following single replacement reaction equation: • Zinc metal reacts with aqueous hydrochloric acid Note: Zinc replaces the hydrogen ion in the reaction In the case with HCl, we will treat H as a metal.

  8. Single Replacement Reactions • Sodium chloride solid reacts with fluorine gas • Aluminum metal reacts with aqueous copper (II) nitrate

  9. The Metal Activity Seriespp.130 in text

  10. The Metal Activity Series • Look at table 4.2 on pp. 130 • Most reactive metals are at the top • Least reactive metals are at the bottom

  11. Will there be a reaction? • Using table 4.2, predict whether or not a reaction will occur in the following examples (if there is a reaction, finish and balance it): • Cu + MgSO4 • Zn + FeCl2  • Al + H2SO4  • Fe + Al2(SO4)3 

  12. Single Displacement Reactions Involving Halogens • The activity series for halogens directly mirrors the position of the halogens on the periodic table: ______________________ • Same rules apply, you can use this series to predict whether substances will undergo a single displacement reaction. • Eg. Pp. 131 in text.

  13. Double Displacement Reactions • Double Displacement Reactions: • Compound + compound  compound+ compound • __________________

  14. Double Replacement Reactions • Think about it like “foil”ing in algebra, ___________ • _______________________________________ • Example: AgNO3(aq) + NaCl(s)  AgCl(s) + NaNO3(aq) • Another example: K2SO4(aq) + Ba(NO3)2(aq)  KNO3(aq) + BaSO4(s)

  15. Double Displacement Reactions • Exchange of cations • Eg. Fig 4.14 in text pp. 132 • Tend to occur in aqueous solutions • ______________________________________ • http://www.youtube.com/watch?v=opY3FLrPTa4 • A gas is produced • Some form a molecular compound such as water.

  16. You need to think about two things with DDR • BaCl2(aq) + K2SO4(aq)  • 1. How will you determine the products? • 2. Which of the products, if any, will precipitate out of solution? • In this course you will be given solubility, therefore, those elements that are INSOLUBLE will precipitate out. • Let’s look at the example on pp. 133 • Pp. 134 #25 a+d only

  17. Lesson #13 - Review of Reactions

  18. Predicting Chemical Reactions • 1. When solid potassium chlorate is heated strongly, it decomposes into solid potassium chloride and oxygen. • 2. Aqueous solutions of barium chloride and sodium carbonate react to produce barium carbonate (ppt) and sodium chloride, which dissolves in water.

  19. Predicting Chemical Reactions • A piece of Mg displaces the lead in (aq) lead (II) nitrate to produce (aq) magnesium nitrate and solid lead. • Hydrogen sulfate (sulfuric acid) and sodium hydroxide, both (aq), react to produce water and sodium sulfate, which dissolves in water.

  20. Predicting Chemical Reactions • 1. Decomposition reaction: hydrogen chloride • 2. Double displacement reaction: iron (III) chloride + sodium hydroxide • 3. Single displacement reaction: zinc + copper (II) nitrate  • 4. Synthesis reaction: aluminum + bromine  • 5. Single displacement reaction: magnesium + hydrogen sulfate (sulfuric acid)

  21. Homework + Test Prep • Do remaining questions on pp. 39 of the green book. • Do all three Self-Checks • Do the readings + all questions from REVIEW OF SC 4.2 pp. 40-42 in the green book. • Wed = LAB • You will hand it in after the lab so NO HOMEWORK, you will only have to study for the TEST!

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