Problem_Set_5_Key - Chemistry 2070 Assignment 5 Due:...

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Unformatted text preview: Chemistry 2070 Assignment 5 Due: Friday, October 24 @2:00pm Name C Kkfi E I Lab TA Lab DayfTime Practice Problems. Chapter IQ: 11, 21, 23, 25, 29, 41, 51, 55. 57, 69, 71. 1. Draw four different resonance forms of N20, indicate which satisfy the octet rule, and which do not. Use fonnal charges to indicate which one would be the dominant structure. .. (9 ® “9 ' :M‘O: W90: 9 ® :M— fl/EO: Iinmr"_ 2. In 1999, a salt was characterized that contained the N; cation, which was the first new all-nitrogen species to be identified in over 190 years. a) Draw the most important Lewis structure'for this ion, including a]! relevant resonance structures? Assign formal charges to all atoms. b) Based on your Lewis structures how many different N-N bond lengths would be expected in N5“? a) @ (a 9 @ .‘A/r‘xv-—{}/— /V§/I/: ?? (a I? o _ «:M: /l/~—— /I/E/t/=: e; (9 «9 C band /¢01L115£’°C"*5cln all Cases [Zed 16¢an Iva-a: bfincj alt/H” ilAan fits/p'm/ Am J; but,» )Jflfflmdl é r50; 5 avTIGM-vs ' 93m“; Lewis structures to predict which of the following molecultflias the shortest S-O bond. 5x Ja 1L {Er cm L) A 32041; [3) 520327. C) 302. d) 8042.. e) 3306} (Hint: this last molecule-iS-symmeffi'e). _ L, $51. I 7 _ w! L: ’C 1,31“ p9! Gav/ml; pr m5. 5 m 5 / 5\ I, I 50 “5 Gnu“ l /.’ \ / \ f5 ‘5: he! "0" \‘-°‘ "65 to" M 1 {’1 ‘f ’ ‘0‘: Bo : E e” '9 30659) a WW2"? anrmhv‘l'm @ Draw Lewis structures for each of the following molecules, Show formal charges and raw or designate their 3-D shapes (e. g. tetrahedral, trigonal pyramidal, angular etc) using VSEPR theory. " :5 6 9 u' I “0 Te’: ‘6: W45 3 I \5‘,’ Afiulflf" ‘5‘: H , C) X85 d) PC14F J ‘F‘ +rlpno} I‘miJfl/ I: " I :‘Elsr’, I, l u I“ \ IPhC': 'fiz Ext—‘F' ,'cu l " ‘I 'l 't‘ . Fl, "’ :Cll 6) CH»; 3 N03. *t'5or-m/ r§\ l T! ...
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This note was uploaded on 09/08/2009 for the course CHEM 2070 taught by Professor Chirik,p during the Fall '05 term at Cornell University (Engineering School).

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Problem_Set_5_Key - Chemistry 2070 Assignment 5 Due:...

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