acids and bases
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Acids and Bases. Properties Theories of Behavior. Name 3 household items that you believe to be acidic or basic. Most of these are ACIDIC!. Most of these are BASIC. Common Items and pH. Properties of ACIDS. Tart /sour taste Strong electrolytes, conduct electricity - PowerPoint PPT PresentationTRANSCRIPT
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Acids and Bases
PropertiesTheories of Behavior
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Name 3 household items that you believe to be acidic or basic.
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Most of these are ACIDIC!
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Most of these are BASIC
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Common Items and pH
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Properties of ACIDS• Tart/sour taste• Strong electrolytes, conduct
electricity• Cause indicators to change color• Blue litmus paper to red• React with bases to form salts• Reactive with metals
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Properties of Bases• Bitter taste• Slippery feel• Weak electrolytes• Cause indicators to
change color• Red litmus paper to blue• React with acids to form
salts
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Arrhenius Theory: ACID
• A hydrogen containing compound that produces H+ ions when dissolved
• Arrhenius Acid is: HCl, HNO3, H2SO4
– Hydrogen ion (H+) donor– Proton (H+) donor
HA (aq) H+ (aq) + A - (aq)
HCl (aq) H+ (aq) + Cl - (aq)
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Arrhenius Theory: BASE
• A hydroxide containing compound that produces OH- ions when dissolved
• Arrhenius Base is: NaOH, Ba(OH)2
– Hydroxide ion (OH-) donor
BOH (aq) B+ (aq) + OH - (aq)
NaOH (aq) Na+ (aq) + OH - (aq)
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Bronsted-Lowry
• ACID: proton donor, H+ donor• BASE: proton acceptor, H+ acceptor• Broadened categories of acids-bases
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Bronsted-Lowry
NH3 + HCl NH4+ + Cl-
Base Conjugate Acid
Acid Conjugate Base
http://www.lakelandschools.us/lh/lburris/pages/acid-base.htm
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Lewis
• Acid : electron-pair acceptor– acids do not have to have Hydrogen in their formula
• Base : electron-pair donor• BrO3
− + MnO2 → Br − + MnO4−
BrO3− is the Lewis acid
MnO2 is the Lewis base
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Key Terms• ACID – a substance that produces protons, H+• BASE- a substance that produces hydroxide ions, OH-
• Conjugate Acid – formed as base gains H+ ion
• Conjugate Base – remains after acid donates H+ ion
• Conjugate Acid/Base Pair - related by loss/gain of single H+ ion
NH3 + H2O NH4+ + OH-
Base ConjugateAcid
Acid Conjugate Base
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"Left hand, right hand, it doesn't matter. I'm amphibious.”Charles Shackleford of the NCSU basketball team
APRIL 2011A two-week undercover operation has netted Lenoir County lawmen with the arrest of a former NC State and NBA basketball player who they say sold them prescription drugs. Charles Shackleford of Kinston was arrested after selling approximately 150 Lortab pills to undercover Kinston police and Lenoir County deputies. Officers say they purchased the prescription pain killers in the vicinity of Fairgrounds Road and Highway 11-55.The 44-year-old Shackleford was jailed on a $30,000 bond and has a first appearance Friday in Lenoir County district court.Shackleford played collegiate basketball at North Carolina State University for 3 seasons (1985/86-1987/88). He was selected by the New Jersey Nets in the 2nd round (32nd overall pick) of the 1988 NBA Draft. He played in six NBA seasons as a forward-center for the Nets, Philadelphia 76ers, Minnesota Timberwolves and Charlotte Hornets.
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Key Terms• Amphoteric – can act as both an acid/base
• Monoprotic – acid that contains one H+ ion ex. HNO3 HCl
• Diprotic – acid that contains two H+ ions ex. H2SO4 H2CO3
• Triprotic – acid that contains three H+ ionsex. H3PO4
• Hydronium – positive ion formed when water gains H+ ion, H3O+