practiceexam3

practiceexam3 - formula M(L 2 ) 2 X 2 where L 2 is a...

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PRACTICE EXAM #3 Please use these questions to assist your studying. They are meant to help you assess the completeness of your preparation. Answers should be obtained from your text or notes. 1) Diamond and graphite differ dramatically in their hardness, conductivity and color. Rationalize these differences in terms of differences in structures and C-C bonding. 2) SnCl 4 is a liquid at room temperature and SnCl 2 is a high-melting solid. Offer a convincing discussion about why this difference exists. 3) Compare the hydrolysis reactions of CCl 4 and SiCl 4 . Why is one so much more reactive than the other? 4) Outline the commercial production of sulfuric acid beginning with elemental sulfur. 5) Describe the inert pair effect with illustrations. Why are the 6s electrons reluctant to ionize? 6) Explain why chelate complexes are often more stable than comparable monodentate complexes. 7) Describe the use of the spectrochemical series in predicting the spin state of transition metal complexes. 8) Describe the isomerization possiblities for an octahedral complex with the
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Unformatted text preview: formula M(L 2 ) 2 X 2 where L 2 is a bidentate ligand capable of spanning only cis positions. Are any of the isomers optically active? 9) Sketch the structures of: [AlCl 4 ]-, Ag(CN) 2-, trans-[Co(en) 2 (NO 2 ) 2 } + , [Zn(NH 3 ) 4 ] 2+ 10) Name each of the following: [Cr(NH 3 ) 3 Br 3 ], K 3 [Fe(C 2 O 4 ) 3 } and K 3 [IrCl 5 (S 2 O 3 )] 11) Draw the crystal field energy-level diagram and show the placement of d electrons for: [V(H 2 O) 6 ] 3+ , [Mn(H 2 O) 6 } 3+ (high spin), [Ru(CN) 6 } 3+ (one unpaired electron), and [NiF 6 ] 4-. 12) Discuss the relationship of electron pairing energies and ligand field splitting energies in determining the spin states of transitional metal complexes. 13) Write equations describing: a) The Mond process, b) The synthesis of dimethylsilicone polymers, c) The reaction of Cr(NH 3 ) 6 3+ with EDTA 4-,d ) The hydrolysis of pyrosulfuric acid, e) The hydrolysis of P 4 O 10 , f) The hydrolysis of AlP....
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