Chem 1A F01 FINAL EXAM

Chem 1A F01 FINAL - lill cit t a,Fall 2001 Prof Tobias 0074me E" tio fiber 7 2001 10:30 3.111.141 12:30 p.m filSWJC'OnSKj carefully before

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Unformatted text preview: lill cit t a ',Fall 2001, Prof. Tobias 0074me E " tio: , fiber 7, 2001, 10:30 3.111.141 12:30 p.m. filSWJC'OnSKj' carefully before starting): 1 firm ARE TOLD TO START. d devices. - - 1. DO NOT OPEN THE _ 2. Turn off all cell phones, airsaani ‘ ’s eetfo " tly. Please do it now. 3. Be sure to fill in the top I ‘u h 4. Where a problem has a numeri "1", credit will be given only if the steps taken to get the 1 answer are clearly demonistiiatdd i‘ an or ‘1 l'zed fashion. ' ‘ 5. Partial credit will be? vein r ans‘. hrs that are substantially correct, but contain easily identifiable errors. Omi'ss on of'lunits ‘ incorrect significant figures are considered errors. Partial credit will not be gixgenifor isolat ig'work that is not readable, or is not on the right track to theanswer. ‘ -‘ 15:13 6. A periodic table and other otentifill seful information are provided on the last page. You may tear this page off if yod wish j lbu 't i: ‘ care to leave the rest of the exam intact. , . 7. If you finish early during 1 f t 10 {if ‘utes (after 1:40 pm), as a courtesy to others who are r“ ‘ . still working near you, i tayi’isea ' u :i til the end of the exam. i 8. Be prepared to show youi' ID card you turn in your exam. '2. fl 0 fl "U x -.1 Ln-hua'mf? ‘o 1—- N IE N .1; [Q o H . II N N I! A 1 ' i . m | . _ . . .5 1 = :3 barbswmam MU‘E'TQE g ‘ ciali Ami. mire-ease!" ! . ‘ .-———-—- i i ‘ w W}; t . 1i ‘ 9 .‘ | l 1,5: ‘ .“ : J 1. (6 points) Balancing chlanhichl nadir) Balance the following using smallest possible whole number coefficients: ‘ I .i E ‘ - ' - ' ‘ iI' \/ “‘3 .' L (b) _C_rt(g) + inrzofib-Licw i ?+ fLI-IBrtgfl 1/ 17 ‘ §H2(g) 7’ V l ‘ M w 2 3 2 (c) ZEuts) + @m@)§~} gEl-‘Faijsj 2. (14 points) Aqueous reac 'ons. lClass' -, Leach of the following as precipitation, acid-base, or redox reactions. For the re X1 rewtio '5, fl dicate which element is oxidized and which is reduced. .g‘ ? a}? W? i I; ‘ ' (s) + 3NaN03(aq) (a)3 OH(ag)+Fe(N03i3‘< §—){Ee :: %>'P'+a_ 1/ glam" "it i Feyiéqw T mad) “" . , ' F 14, 1.: - - (OHEC - 1W9"; 1' a at; (b)HC2F1'E2(aq)-+K0}iy)~+ :ltfgglz 5 I C ) I; dad-195186: ‘ (dz/$50 a '- *‘l ‘ “flit-’2. -+7_-—1;.: 7031) 2CuC1(aq) -—> CuC12(' ' '. . ‘ Ped0>< Z i + -— icy/Lg 20: I MAR— arid n ‘ m (c) Sr(N03)2(aq) _+ HzSO‘K ) 1H _ r804 1 PYGClPH‘afi: -. -' 1" c1( —> = V X _ I . (a) (2 points) Wri ,omcmsb (b) (3 points) What is .3 it qo V 0) ("5% PM “L R— (N03); 4. Thermochemisu'y. Considef l-i-u- _ ' _ ' (b) (4 points) What is for the lq' . - : A I 1 I 7:7 ‘ , 00:) (2 points) Does this a: * Mics ' 3 1 eabalaimjed! I 1 " 3. Solution stoichiometry.- A samfi sodium sulfate solution. 3 3 ? 1‘ fl. ' 1 flaw 3 4 r 1 i i?! i ; (a) (8 points) Use data provided lNch) a j - 1‘ its." gfias ‘50!)(1034’700 ( ,0/75 nae/S the ‘ :3 ' ‘ ffuation for the reaction that occurs. 8 ' thematic Wow) [:A H: 1% Z I: of 10.0 g N205(g)? ,‘LU 1 '5; .2 3?. ; 4 MW 2 N6 N055?) g 1ead([[) nitrate is: mixed with 125 mL 0.100 M 1— mom, j‘ltaustify your answer with calculations!) a {4:01'E‘4q _ c )=4.528801 xxo'tnousqug); ((9 @m tfi 48 A TLAH" 600% Kifio‘flé.) MK 50/61/863 _.. )6 ..____..__._>5 log/v 5 /m9/ i “from or release heat to the surroundings? x f t : it . ‘ . M | - . H 4 ‘ i ‘1‘ : ‘ ‘ 1 H "w j a u ; H t I ‘1‘ ' 'wfl,‘ . 1-: g a 3 if 5.Thermoohemistry and tr 'jrgy. Consider the reaction: 03(g)—y(g(i)’+0(g) ’ fil."‘I;-ill‘ .' ewoga‘Worthereacfion. ‘ D4233 =L105-7— WWS'A (a) (5 points) Use dat . .. 1 radiation in the logwer atmosphere. Calculate the - 1.; ‘ough energy to induce this reaction. :"DKJ _ U _7 a, I is : ta transition from the ground state to the n = 4 state. bear? r' 860"“? n: photon that is absorbed or emittgL, a T E § "n/s m -. S i‘ i l i . F - configurations for the follo (f t W) 7. (8 points) Elec n confiihrafio'is. (a) Theion typically formei l (b) The ion typically f0 ..- .j by (0) (313+ ' ‘ (d) Cu+ 3 1: ‘8. (2 points) Energy levels in In electrons (indicating spins With in terms of electron confi 6 9. in; ' . ' oints) Ionization ene 4 ' l . ( '1 667106 In Eggfik/S ‘1 = 3 the noble gas abbreviation, write electron :7 i provide: C S = y a Fill the following orbital diagram with- ‘ [email protected] , _ you) 3 J l { I W i . «grid/MW 55‘ #806,35 ‘ i -—l> (was 65' l . ‘ a larger ionizatioéenergy, Sig->1? Brie ytglgdl b‘fillfl ' -' tive nuclear char 'e, 9' —"' - )zahong We W 16 sack/amt [led {n+0 776 HUCBOSJ r______—____,——,__—fi r. 131M 10. Atomic and ionic sizes. 1 i ‘ ' (a) (2 points) Why does the da :m avg dismaner radius thantheHamm? :3 3' «mama/6 mere 6 75ng WWMWanbwy ' ! (b) (6 points) Which atomi large N: ,. Briefly explain in terms of electron configurations an the concept of electron 5,5115% -: w _ ’5 5’93” i 6 N61 -* /67'28’12§LPG: - a _--‘ hCSISMOYC else-from ‘ It ISZZSEipMéiapG Limos/more a . 31* imi are” (c) (2 points) Arrange H, HE, and iii" in o '. r of increasing size’. a z + ‘ l1? H < #4 H 11. Ionic bonding. (a) (2 points) Write Coulo b's: law for: ;- energy of interaction between two charges, Q1 and Q2, ‘ separatedbyadistance d. 3 . ; "* ‘ ‘ ‘ wmmfitggdw. law 6 ‘21 3 1 E g i; i ‘ (1:3) (2 points) Does the lattife (meiigy 6f 6 z/k the ionic charges increaseh j - i w H7 ; “l - s n ' i ‘ ' :3 l t 4 (c) (2 points) Does the latti+te eneiljgy of ionic solid increase or-decrease as the magnitudes of 1 w Sionic solid increase or decrease as the sizes of the ions increase? 1 I mmwual* 1 (d) (10 points) Arrange the How" L your arrangement: LiCl(s), C16}? Lia! fl —/ . ‘ L5r< MGM 1.957“ W .11, g fi/ fleth/O’. 2? / a? 777 CC- ‘ 12. Covalent bonding. (a) (2 points) What is a cov e‘ amt-fl C—S, Be—F, N . (d . . E w an are 1 moment in the following o: =1 I HBr ' ‘ I «P r of increasing lattioe energies, and briefly explain 5 ' .and Ca0(s). ' i :| . . . ‘i i _ 050 ‘1 Lev/WW lac-fr o A a ‘jfweentheNatom Ei 1Bonds in order of i gs o [3r {if—I; A 47 fan/c4 (FIW'M ) A s the longest? I ‘ :; ween the N atoms the strongest? E was???“ — ncreasing polarity: 1. lthe positive end to the negative end of the dipole N<+H (at. 13. Lewis structures. (I ) - all resonance sausages. N0+NED M 4510':— O . N—O bend lengths. . '(c') (It) points) Draw v 1 in each structure. Indicate a [O chargesb’af : I N q]. :J; ‘ like middle (d) (2 points) Draw a s ' II (b) (2 points) Based on yo an i . i t i : -; E i -\ i a ‘ I i i I . ‘ i —-'[ (‘93) (10 points)Draw ' I“ g : true |. ‘1 1,“: 5-4: 5417 = -, (/ > Mg m Vat/Li. ENE/Va u ‘H 11.. :1‘ 7 iii! - - N3”, indicating the formal charge on each atom - 6 ‘structures is most reasonable based on the formal ' G 2 a) on ' --u—_, 59-1" N: ’ W7 a "W0. .-' e ask/kg mfinmw a I m MOM firmonam CV34“ . hif’al'ch \ MGM? / ...
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This test prep was uploaded on 02/19/2008 for the course CHEM 1A taught by Professor Tobias during the Fall '01 term at UC Irvine.

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Chem 1A F01 FINAL - lill cit t a,Fall 2001 Prof Tobias 0074me E" tio fiber 7 2001 10:30 3.111.141 12:30 p.m filSWJC'OnSKj carefully before

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