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Unformatted text preview: 2OH 1- +H 2-0.83V o: 2Cl 1- Cl 2 + 2e-+1.36V 2 H 2 O + 2Cl 1- Cl 2 +H 2 +2OH 1- -2.19V GOAL Identify (not memorize) the cathode and anode reactions in a battery REACTION TYPES How does reaction types correlate with e- flow? How do you distinguish reaction type from chemical equation? Text: Not in Text PIC RECOGNIZING REACTION TYPES Redox Change in oxidation state May be accompanied by bond formation o Ex. H 2 + Cl 2 2 HCl Precipitation soluble reactants form insoluble ionic product o Ex. Pb(NO 3 ) 2 + 2 NaI PbI 2 + 2 NaNO 3 Acid/Base Lewis: bond formation (but no change in oxidation state) o Ex. CO 2 + H 2 O H 2 CO 3 Bronsted: hydrogen ion transfer; conjugate pairs o Ex. H2CO3 + NaOH NaHCO3 + H2O Friday, December 01, 2006 GOALS Distinguish reaction by electon motion Distinguish reaction by chemical equation...
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