Final_Exam_S09m

Final_Exam_S09m - C hemis tr y 2 58 I no r g a nic C he mis...

Info iconThis preview shows page 1. Sign up to view the full content.

View Full Document Right Arrow Icon
This is the end of the preview. Sign up to access the rest of the document.

Unformatted text preview: C hemis tr y 2 58 I no r g a nic C he mis tr y I F inal E xam inat ion ( 1 45 point s ) M ay 2 2, 2 009 Y our signatur e a ffir m s that y ou abide b y the G us tav us H onor C ode : N am e : _ ____________________________ (P le a se w rite y o u r n a m e o n th e b a c k o f th e tes t a s w e ll.) 1. (15) F Th P ro v id e a n a m e (IUP AC o r tra d itio n a l), f o rm u la , o r stru c tu re , a s a p p ro p ria te , f o r e a c h e x a m p le b e lo w. Ti S slak ed lim e (form u la) E p so m sa lt h ex a flu o ro co b a ltate (III) (stru ctu re & c h a rg e) c is -tetr a a m m in ed ich lo ro co b a lt(III) (stru ctu re & c h a rg e) Ra Bi ly e (form u la) Gd c a lciu m n itra te (fo rm u la ) e n ( struct u re) Eu 2 . (12) D raw th e structures of th e tw o m o st c o m m o n o x id es of p h o sph o rus. 3. (5) L abel e a ch of the follow ing c hemical e ntities a s b eing h ard or soft, f rom a h ar d/sof t a c id-base perspec tive. S e 2T i4+ Hg 2+ F￿ CH 3 CO 2 H 4. (8) In a clear a nd brief f ashion , d es cribe the tw o ph ysical e ffe cts that c ontribu te to the “iner t p air e ffe ct”. 5. (10) In d icate w h eth er o r n o t th e c o m p o u n d s b elo w w ill be s ig n ifican tly w ater-so lu b le (w rite ‘yes ’ o r ‘n o ’). _ _________ H gF2 _ _________ S r Cl2 _ __________ N H 4I _ __________ H gS _ __________ N a NO 2 6. (10) A rra n g e th e se a c id s in o rd e r o f in c re a sin g a c id stre n g th : H F , C H 4 , H 2 S O 4 , T e (O H )6 , H C lO 4 . _ _________ lea st a c id ic _ _________ _ __________ _ __________ _ __________ m o st a c id ic 7. (15) P rovide on e e xam ple of e ach of the thre e types o f reaction s: a reaction that c ontains a n ion ic dissociative (D ) step in its m echanism; (2) a reaction that c ontains an as sociative (A ) step in its m echanism; a nd ( 3) a reaction that c ontains a n electron -transfer (E T ) step in its m echanism. W rite both the ov erall reaction a nd the s tep to w hich you ref er, f or e ach case. 8. (5) A rra n g e th e se lig a n d s in o rd e r o f in c re a sin g lig a n d fie ld stre n g th : C O , P h 3 P , I￿ , e n , O H ￿ . _ _________ w eak est _ _________ _ __________ _ __________ _ __________ stron g est 9. (10) L ist (a) the nu m ber o f valence electron s a ssociated w ith each c hem ical species g iven b elow , a nd ( b) the nu m ber o f un p aired electron s (if any) a ssociated w ith e ach . F o r th e m etal e x am p les cou n t o n ly th e m etal’s v a len ce electro n s. a) C r(II), tetr a h e d ra l, w e a k fie ld - -------------------------------------------------------------------------------------------------b ) M n (V II), tetr a h e d ra l, stro n g fie ld - -------------------------------------------------------------------------------------------------c) V (CO)6 - -------------------------------------------------------------------------------------------------d) SO 2 - ------------------------------------------------------------------------------------------------e) O 2 ￿ - ------------------------------------------------------------------------------------------------# o f v a le nc e e # o f u npa ire d e - 10. (5) C h lo roflu o rocarb o n s such a s C C l2 F 2 (F re o n 1 2 ) h a v e a d e le te rio u s e f f e c t o n th e a tm o sp h e ric o z o n e laye r. B rie f ly d escrib e th e ch ief m ech an ism b y w h ich th is occu rs. 11. (5) B riefly d e scrib e th e p rocess by w h ich th e g reenh o u se effect o c cu rs. 12. (15) W rite a b a la nc e d ha lf -re a c tion f or e a c h oxida tion a nd re duc tion c omponent, a nd a b a la nc e d ove ra ll re a c tion, f or th e u n b a la n c e d re a c tio n g iv e n b e lo w . CrO42- + Br￿ ------------> re duc tion: o x id a tio n : b a la nc e d ove ra ll re a c tion: Cr3+ + Br2 (in ac idic solution) 1 3. (10) G iv en th at a v o ltaic cell is to b e c o n structed so a s to u se the fo llo w in g h a lf-reactio n s un d er stan d ard co n d itio n s, (a) w rite th e b a la n c e d c e ll re a c tio n (yo u w ill n e e d to b a la n c e th e h a lf- re a c tio n s p ro p e rly f irs t); (b) c a lc ula te the v olta ge o f the c e ll; a nd (c) d r aw a * *neat a nd cle ar ** d ia gra m of the c e ll, w ith a ll re le va nt p a rts la be le d, a ppropria te c onc e ntra tions g iv en , a n d d irectio n o f electron f lo w (in a c he m ical s en se) in d icated. Y o u d iagram m ay in co rpo rate p latin u m a s a c o n n e c to r a n d /o r e le c tro c h e m ic a lly in e rt e le c tro d e if n e c e s s a ry. M nO 4 ￿ -----------> A g + + eM n 2+ E ° = + 1.51 v E ° = + 0.80 v (in a c idic solution) ------------> A g 14. (6) P rovide the struc ture o r f ormula , a s re que s te d, f or: 1 ,10-phe na nthroline (s truc ture ), 1 ,1,1-trif luoro-2,4p en tan ed io n e (stru ctu re), an d d ieth ylam m o n iu m t etrac h lo ro cu p rate (fo rm u la). 15. (15) Ind icate w hether a s olution o f e ach of the s ub stances, d issolved in w ater a t roo m temp erature , w ou ld be acidic, b a sic , o r n e u tra l. U se th e letters A (a cid ic). B (b a sic), a n d N (n eu tral) f or y o u r a n sw ers. K 3P O 4 Mn 2 O 7 Ca O2 N2 _ __ ___ ___ ___ ___ H 2O CO H 2 S eO 4 Ar Na Cl ___ _ __ _ __ ___ ___ NO CO 2 N 2O s o d iu m a ce ta te NH 3 ___ _ __ _ __ ___ _ __ 16. F or o ne p oint e xtra c re dit e a c h, w rite the n a mes o f some or a ll o f the n a med ele ments o f a tomic n umber 9 6 a nd high er. D o no t u se p laceho lder n ames such as U uu , U ub , e tc. 17 . H av e a g rea t su m m er! ...
View Full Document

{[ snackBarMessage ]}

Ask a homework question - tutors are online