PracticeExam2.S03.key

PracticeExam2.S03.key - 6’ ,qp EXAM 2 2003 l. (6 pts)...

Info iconThis preview shows pages 1–4. Sign up to view the full content.

View Full Document Right Arrow Icon
Background image of page 1

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
Background image of page 2
Background image of page 3

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
Background image of page 4
This is the end of the preview. Sign up to access the rest of the document.

Unformatted text preview: 6’ ,qp EXAM 2 2003 l. (6 pts) Give the oxidation state of the central metal atom in each of the following coordination compounds and the coordination number. Oxidation State Coordination Number é [Pt(NH3)BBT3]NO3 + Li K3[Co(CN)6] + 3 6 K[CoBr2C12(en)] + 3 é 2. (4 pts) Give the systematic name for the following compound. ' olagsi‘uwu Oll‘b’ro moolfclnloro aHn lemedu‘ayw‘me) cabal/late (HIE) K[C0Br2C12(en)] 3. (4 pts) Draw the square planar complex [Pd(en)Cl(CN)]. NHZ , \ /cl /Pol \ NHé CM 4. (6 pts) Draw the structures of each of the following complex ions. cis-tetraamminechloronitrocoba1t(III) ion trans-tetraamminechlorocyanocobalt(III) ion fl Noa 18‘0" N02 H N\ l ,Cl | “H .5 ~_ / I Na," ,r 5 7C0 r3 /C0"\ I HjN/l N km} N)“ I, N"; NH} C] 5. (6 pts) Draw the d-orbital diagram, including the electrons, for the high spin tetrahedral complex K[Fe(Cl)4]. 045 '— ..—.— 3 1' Fe ET ’1 ~ 1L3— 4,1. EXAM 2 2003 6. (10 pts) Calculate the mass of methyl tert—butyl ether (MTBE) that must be added to 1.0 kg of gasoline to produce a mixture that is 2.7% oxygen by mass. The molecular formula for MTBE is CH3OC(CH3)3. ’ v o t - 9'79 :2 90x em 917/4 wig/1 bJ mass —) '003 or 7IIC5 36 O (mot-‘01) ) y a lel : 6 .mal CH,OC(CH$ 3) 279(163) I. Whit/a 1,67 ma] C'HJUC(CHJ)3( : Mala MTBE 7. (16 pts) Draw the structure for each of the following compounds. a) ethyl methyl ketone o CH CH 2 CH C‘ H 0 b) an aldehyde that is an isomer of ethyl methyl ketone l2 CfiH i' H . CchHZ C'HZCH or ensc'Hcy—l 4.?0rmmlot LAM/mt CH5 be CtngO c) diethyl ether CHJC‘H'LOC’HZCH} CL] ‘00 d) a tertiary alcohol that is an isomer of diethyl ether My POW/J01 WHASl’ be: CnglOO 2 EXAM 2 8. 10. 11. 2003 (6 pts) Draw the structure for each of the following compounds a) ethanol C H} C H 0 H j 2 b) ethyl methyl ether 0 C’ H C H 5 C H a 3 c) methanol 0 H 3 0 H a) (2 pts) Which of the following compounds is most soluble in water? Circle the answer. ethanol ethyl methyl ether . e Mam“ V‘ W 7 b) (2 pts) Which of the following compounds is least soluble in water? Circle the answer. . ethanol methanol ethyl methyl ether (6 pts) Solutions of [Co(NH3)6]2+, [Co(HzO)(,]2+ and [Co(Cl)4]2_ are colored. One of the solutions is pink(red), one is blue and one is yellow. Based on the spectrochemical series, assign the solution color of each complex. Color of Solution 61%.?ngbe C! >—— < H20 4 N H} [Co(NH3)6]2+ 9 Cl iQ g! V [ole n singé/t ~H00 W‘ {){eld [Comzow '1 v. ‘ wt 9 W Mag?” 5 [Co(c1)4]2e M 0 mom 6 1W6?” SM“ Iv 6 n m ~L(00 (an. (10 pts) Calculate the molality of CZHSOH in a water solution that is prepared by mixing 50.0 mL of CZHSOH with 100.0 mL oszO at 20°C. The density of CZHSOH is 0.789 g/ml at 20°C. ‘ moi Salt/dc mom/Ulj 9 k3 solven‘t L o, 8 v1 210—1 50"“ ( 7 7ML)(H6g (i00mL)(l .3— ML N EXAM 2 2003 12. (12 pts) Draw the structure for each of the following compounds. a) cis-2,3-dichloro-2-pentene C c l \ / /C : C\ _ H5 C c H 2 C H 5 b) 2-ethyl—1 ,4-dimethylbenzene Q H 3C C H 2 C H 3 c) 3-methyl—l-butanol c H’ 3 1 CHsCHC HZC’HZ 0H 13. (10 pts) At a certain temperature, the vapor pressure of pure benzene (C6H6) is 0.930 atm. A solution was prepared by dissolving 10.0 g of a non-dissociating, nonvolatile solute in 78.11 g of benzene at that temperature. The vapor pressure of the solution was found to be 0.900 atm. Assuming the solution behaves ideally, determine the molar mass of the solute. mam mot SS lC6H6 .. (7. (1} 6 4 “L09 W01 (— 7 PCGHJ " xc‘HéPceHg ‘ V'c H I “C H : 7 X : 6 L 5 e 6 ncéHé + “Sagutc l 4' V‘s’alw‘tc ,lt C H ,1“) 7? 9 6 6(78 ’0‘) Mcérlé : lmal | a '3 _ \ CéHé - ( l+m450W5> Peerlé __L MM O'olpoaiw:( lfn>(0.730 ) m —— 0:033 WWI t0. 0% - I 9 ' 303 /Wlal 4 ...
View Full Document

This note was uploaded on 10/26/2008 for the course CHEM 1C taught by Professor Hooker during the Spring '06 term at UCSB.

Page1 / 4

PracticeExam2.S03.key - 6’ ,qp EXAM 2 2003 l. (6 pts)...

This preview shows document pages 1 - 4. Sign up to view the full document.

View Full Document Right Arrow Icon
Ask a homework question - tutors are online