eng-spring07-q208

eng-spring07-q208 - Ag (g) Ag + (g) + e-IE (Ag) = 731...

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CHEM 151: Quiz 8 NAME ______________________ ID #_______________ Show your work for full credit Eng Q208 1. (13 pts total – 3 pts each, except for vii.) Answer the following True or False. i. P has a lower ionization energy than As. ii. Ge has a greater (absolute value of) electron affinity than K. iii. Al is more electronegative than Cl. iv. KI has a larger (absolute value for the) lattice energy than LiF. vii. (1 pt) ScN has a larger (absolute value for the) lattice energy than CaO. 2. (4 pts) Draw a qualitative energy level diagram for the Born-Haber cycle for making solid AgI from silver and iodine. Don’t forget to label the steps and the y axis. Ag (s) Ag (g) Δ H f ° (Ag, sublimation) = 150. kJ/mol
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Unformatted text preview: Ag (g) Ag + (g) + e-IE (Ag) = 731 kJ/mol I 2 (s) I 2 (g) H f (I2 gas) = 62 kJ I 2 (g) I (g) D (I2) = 76 kJ I (g) + e- I-(g) EA (I) = -295 kJ/mol Ag (s) + I 2 (l) AgI (s) H f (AgI) = -62 kJ/mol Ag + (g) + I-(g) AgI (s) H lattice (AgI) = -786 kJ/mol CHEM 151: Quiz 8 NAME ______________________ ID #_______________ Show your work for full credit Eng Q208 3. (4 pts) Draw the Lewis dot symbols for C and Ge. 4. (4 pts) At a cost of 1 pt per compound, Dr. Eng will give you the formula for the compound(s). Draw the Lewis structures (or Lewis electron-dot structures) for i. carbon disulfide ii. bromine trifluoride...
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eng-spring07-q208 - Ag (g) Ag + (g) + e-IE (Ag) = 731...

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