Ch. 9, 10 - Ionic-Lewis WS

Ch. 9, 10 - Ionic-Lewis WS - structures showing whether the...

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Ionic Bonding and Lewis Structure Worksheet 1. Use the Born-Haber cycle to calculate the lattice energy of KF. K(s) K(g) H ° = 90 kJ K(g) K + (g) + e H ° = 419 kJ F 2 (g) 2F(g) H ° = 159 kJ K(s) + ½ F 2 (g) KF(s) H ° f = -569 kJ F(g) + e F - (g) H ° = -328 kJ 2. Use the Born-Haber Cycle to calculate the electron affinity of NaCl. Na(s) Na(g) H ° = 109 kJ Cl 2 (g) 2Cl(g) H ° = 243 kJ Na(g) Na + (g) + e H ° = 496 kJ Na(s) + ½ Cl 2 (g) NaCl(s) H ° f = -411 kJ Na + (g) + Cl - (g) NaCl(s) H ° = -711 kJ 3. Arrange the following in order of increasing lattice energy and explain your answer: a. MgS, MgO, MgSe b. AlCl 3 , NaCl, MgCl 2 4. Using the bond dissociation energies, calculate the H ° rxn for the following reaction: a. CH 4 (g) + Cl 2 (g) CH 3 Cl(g) + HCl(g) b. C 2 H 2 (g) + H 2 (g) C 2 H 4 (g)
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5. Represent the bonding between the following pairs of atoms by means of Lewis
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Unformatted text preview: structures showing whether the bonding is essentially ionic or covalent. a. Cs and Br b. H and Sb c. B and Cl d. Cs and Cl e. Li and O f. Cl and I 6. Propose acceptable Lewis structures for the following polyatomic ions: a. SO 3 2-b. CO 3 2-c. NO 2-7. If the following bonds are polar, use the polar arrow to indicate the polarity: a. S-H b. O-Cl c. Cl-Cl d. P-H 8. Which of the following species requires a resonance hybrid for its Lewis structure? a. CO 2 b. OCl-c. CO 3 2-d. OH-9. Which of the following species is it necessary to employ an expanded valence shell to represent the Lewis structure: a. PI 3 b. ICl 3 c. OSCl 2 d. SF 4 e. ClO 4-...
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Ch. 9, 10 - Ionic-Lewis WS - structures showing whether the...

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