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CHAPTER 3 OBJECTIVES - a pK a in terms of acid strength of...

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CHEM 2370 OBJECTIVES CHAPTER 3 ACIDS & BASES TERMS : Know definitions, gives examples, explain briefly 1. Bronsted acids and bases 2. Lewis acids and bases 3. Conjugate acid-base pairs 4. K a , pK a 5. Acid-base reactions 6. Complete & incomplete (partial) ionization 7. Homolysis, heterolysis 8. Carbocations, carbanions, radicals 9. Electron-releasing, electron-withdrawing inductive effects 10. Dispersal or delocalization of electrons, positive and negative charges 11. Protic, aprotic solvents 12. Solvation, dissociation of ions 13. Deuterium ( 2 H) and tritium ( 3 H) labeling KNOW HOW TO: 1. Identify Bronsted acids and bases and Lewis acids and bases. 2. Identify conjugate acid-base pairs. 3. Write structures of : a) the conjugate acid of a given base b) the conjugate base of a given acid 4. Explain why/how an electron-deficient atom/ion (such as B, Al, Zn, Fe, etc. can act as a Lewis acid. 5. Use curved arrows (using the universally accepted convention) to show the direction of electron flow. 6. Interpret the numerical value of K
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Unformatted text preview: a , pK a in terms of acid strength of the acid, and therefore, the base strength of its conjugate base. 7. Use K a , pK a values to determine the outcome/spontaneity of a potential acid-base reaction. 8. Determine if a given solvent is protic or aprotic. 9. Explain why water-insoluble acids dissolve in aqueous sodium hydroxide and why water-insoluble bases dissolve in aqueous HCl. 10. Compare (and explain!!) the acidity ( i.e. , the tendency to lose H as H + ) of various H-A bonds using differences in atomic size, electronegativity, hybridization (% s character), inductive effects and resonance effects. 11. Explain why it is not possible to use a base stronger than hydroxide ion in aqueous solution. 12. Prepare deuterium ( 2 H) and tritium ( 3 H) labeled compounds using acid-base reactions. 13. Apply, interpret relationships between standard free energy change and a) a) equilibrium constant and b) b) enthalpy and entropy...
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