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Catalyst 6/6 /13

Catalyst 6/6 /13. Place Packet#14 in bin BEFORE you sit down and start the catalyst. Announcements. Return Chemistry textbooks ASAP! A debt slip will be issued if you do not return your textbook. ( $85 per book ) Benchmark Exam#4 next Wednesday and Thursday, May 29 and May 30.

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Catalyst 6/6 /13

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  1. Catalyst 6/6/13 Place Packet#14 in bin BEFORE you sit down and start the catalyst.

  2. Announcements • Return Chemistry textbooks ASAP! A debt slip will be issued if you do not return your textbook. ($85 per book) • Benchmark Exam#4 next Wednesday and Thursday, May 29 and May 30

  3. Agenda 6/6/13 • Catalyst • Announcements • Benchmark#4 TOMORROW Friday, June 7th(P4 Monday) • Return Chemistry textbooks by next Friday! A debt slip will be issued if you do not return your textbook. ($85 per book) • Acids/Bases • Guided Practice • BM#4 Review*

  4. Objective 6/6/13 We will be able to • Define Arrhenius acid and base • Compare and contrast characteristics of acids and bases  

  5. Arrhenius Acid • An Arrhenius acid is a chemical compound that releases hydrogen ions (H+) as the only cation • Examples: HCl, HBr, HI, HF

  6. Examples of Acids • HCl, hydrochloric acid • CH3COOH, acetic acid

  7. Properties of Acids • Sour taste • Change the color of acid-indicators (turns red) • Some acids react with metals and release hydrogen gas • Reacts with bases to produce salts and water • Conduct electric current

  8. Arrhenius Acid • An Arrhenius acid is a chemical compound that releases hydrogen ions (H+) as the only cation • Examples: HCl, HBr, HI, HF

  9. Examples of Acids STRONG ACIDS “strong acid” = completely dissociates into H+ • HCl • HBr • H2SO4 • H3PO4 WEAK ACIDS “weak acid” = DOES NOT completelydissociates into H+ • CH3COOH • HF • HCN • H2S

  10. Arrhenius Base • An Arrhenius base is a chemical compound that releases hydroxide ions (-OH) as the only anion • Examples: KOH, Ba(OH)2, NaOH, LiOH, RbOH, Ca(OH)2

  11. Properties of Bases • Bitter taste • Change the color of acid-base indicators (turns blue) • Dilute solutions feel slippery • Reacts with acids to produce salts and water • Conducts electric current

  12. Real Life Examples of Bases CaCO3, calcium carbonate NH4+, ammonia NaOH, sodium hydroxide

  13. Examples of Bases STRONG BASES “strong base” = completely dissociates into -OH • NaOH • KOH • LiOH • Ca(OH)2 WEAK BASES “weak base” = DOES NOT completelydissociates into -OH • NH3 • CH3NH2 • C5H5N

  14. Side note: There are actually three main types of acids and bases. We’re only focusing on one type due to time…

  15. Ionization Reactions

  16. Class Check Point Directions: On a piece of paper or Notability, answer the following independently. Ask a partner only if you are truly stuck. • Compare and contrast the properties of acids and bases.

  17. Objective 6/6/13 We will be able to • Identify the parts of a neutralization reaction  

  18. Acid-Base Neutralization Reaction • When a strong acid and strong base react, your products will always produce a saltand water. A salt is an ioniccompound made up of a cationand an anion.

  19. Acid-Base Neutralization Reactions • In a neutralization reaction, strong acids dissociate to produce H+ and strong bases produce –OH. • Proton and hydroxide react to produce water • The other elements combine to form a salt Example: HCl (aq) + NaOH (aq)  NaCl (aq) + H2O (l)

  20. HCl + NaOH NaCl + H2O Cl O + Na+ H Na Cl- H + O H H

  21. Identify the Acid, Base, and Salt in this Reaction! H2CO3 + Sr(OH)2 Sr(HCO3)2 + 2H2O Acid:? Base: ? Salt: ?

  22. Identify the Acid, Base, and Salt in this Reaction! H2CO3 + Sr(OH)2 SrCO3 + 2H2O Acid:H2CO3 Base: Sr(OH)2 Salt: SrCO3

  23. Identify the Acid, Base, and Salt in this Reaction! 2HBr + Ba(OH)2 BaBr2 + 2H2O Acid: ? Base: ? Salt: ?

  24. Identify the Acid, Base, and Salt in this Reaction! 2HBr + Ba(OH)2 BaBr2 + 2H2O Acid:HBr Base: Ba(OH)2 Salt: BaBr2

  25. Class Check Point On a piece of paper or Notability, answer the following independently. Ask a partner only if you are truly stuck. • 1. An acid is a _________ donor. • 2. A base is a _________ donor. • 3. Given the following neutralization reaction, identify the acid, base, and salt. HClO4 + NaOH NaClO4 + H2O

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