tb2 - I - Chapter 2 Polar Covalent Bonds: Acids and Bases...

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I Chapter 2 - Polar Covalent Bonds: Acids and Bases For questions 1-10 give the letter of the tenn that best matches the given definition. a. Bmnsted-LowryAcid b. Bnmsted-LowryBase c. Lewis Acid d. LewisBase e. Electronegativity f. g. h. i. IonicBond Covalent Bond Polar-Covalent Bond Hydrophobic Hydrophilic j. 1. Any species that can accept electrons. Answer: c 2. A bond between two atoms differing in electronegativity by 0.5 - 2. Answer: h 3. A tenn used to describe a "water loving" species. Answer: J 4. A compound that can donate a proton. Answer: a 5. The ability of an atom to attract the shared electrons in a covalent bond. Answer: e 6. A tenn used to describe a "water fearing" species. Answer: 7. Any species that can donate electrons. Answer: d 8. A bond between two atoms differing in electronegativity by < 0.5 Answer: g 9. A compound that can accept a proton. Answer: b 10. A bond between two atoms differing in electronegativity by > 2. Answer: f 4 Chapter 2: Polar Covalent Bonds; Acids and Bases
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Calculate the formal charges on the indicated atoms in each compound below. .. :0:"""- 6. .. I .. :Cl-P-Ct: .. I~;: :Cl: "5. 11. The formal charge on phosphorous is - . Answer: +1 12. The formal charge on oxygen is - . Answer: -1 13. The formal charge on carbon is - . Answer: -1 14. The formal charge on oxygen is - . Answer: +1 7. 8. \ I :C-O: Phenylalanine is an amino acid that is essential to human nutrition. The representation below shows the structure of phenylalanine at physiological pH. Consider this structure to answer the following questions. A.......... ~:O: o- ~ * II .. CHzCHC- 0: I .., - NH3 B. phenylalanine Answer: 15. Assign any formal charges to atoms in this representation of phenylalanine. .0.
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tb2 - I - Chapter 2 Polar Covalent Bonds: Acids and Bases...

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