CHEM 1020.01 Final Exam PDF

_\.h_ $*" CHEM 1020.01 Final Exam Adams MAY 3, 2017 Version H...

_\.h_ $*" CHEM 1020.01 Final Exam Adams MAY 3, 2017 Version H There are 42 questions on the exam. Put answers to 1-21 (7 points each) on the L- FRONT of the Scantron and answers to 51 - 71 (3 points each) on the BACK of the Scantron. *********************************************************** , 21. ryh+t is the pH of a solution which is 0.25 M in acetic acid and 0.35 M in lithium acetate? 4.89 r A\ B. 9.11 C. 4.60 2.67 D. E. 9.44 Yq+{rCDu. =[EIl aaQ - - e' :o.oe(rr n,-{c- Zrole - -,.o-llZwol.- ' Tlz ' Ihr,e 2 r*-{c- "il I =;;o.* | 12. How many grams of potassium sulfide must be mixed with 47.8 grams of water in order to obtain a solution lvhich has a mole fraction of potassium sulfide equal to 0.13? U A.z.gx 1029 B. 7.1 x 1009 C. 4.4x 101 g @oox r0-1 g E. 3.8x 101 g -{/\ _- w-l Y?9 0,1 3(r + Z,bt)= 6 ' r.rr'./z,J:.t-i.!.-, v.-5 -. r -e 1=+-fr+{t lt.oz- r -\'-: o'l?x + o'sqs.k r*( 0,12,> -- n^-{_E2s -;; 4z'a rr,.*'t F ,-s.ue wal ,.tra |Y :11" ". i t g. Wh"n the reaction, 2 SO31g = 2 SO49 + O2(C), reacheJ equiHffiilm r-nJA i m.rconrainer, ir is found rhar rhere are 3.9 mole of SO2, 0.75 moles of 02,ard26 moles of SO3. What is the equilibrium consrant for the reacrion? A.6.0*10-3 Se.o.ro+ c. 1.1'r. 10- 1 D. 1.1*103 E. 1.7* 10-2 y= [So4,!04 ( sor) = +*# ' D zoq' @ r\^ {r.stu) I so{, o. ?< p{ (r.Er)' ( 0, )'- 0. 0110 ,\t ?a ?&*j fu) : q.Qv rrlo ' Y ( t, ?q rq l t.'.r- c l*- Page 3, r 2  -t CHEM 1020.01 \rtlLItIvLvrvI Final Exam Adams MAY 3, ZA17 Version H There are 4? questions on the exam. Put answers to 1-21 (7 points each) on the FRONT of the Scantron and answers to 5'1 - 71 (3 points each) on the BACK of the Sca nt ro n. *rr**************************i?tx?;xx*x********************* i-1. When NO7- iaq -.{. 14 \H-: -: -AiOl- (li: l-'''- : -" :.! :-'---'iJthe >r-rrr oi t1.Le i- 'ce coefficients oi the r.",; ''--:. "' -- -'l; \ 1l E l c.4 D. 3 +-Z{zo rToH' + q()U- |.: - ' jff , ?a' r IL14TA * z-r-[.O ) tHaO + lvtl + lli\H- t __$ t-.lir :1L"Qz ,- 15. At 200"C,*a certain reaction is found to proceed lvith an enthalpy change of 83.0 kcal, and an entropy change of "kl reaction? 240 callK. What is the free energy- change for this ,.'-.-. - A.94.4kcalB.78.2kcalC'-11'3kcalD'4'72kcal(\E'll'lKcal bG = AH- ras - g3.o E.--( - Lt?3". (o. oz'{ = ll,b4t W-4 ti 16. TheKrrof iron(Il)carbonate is3.2'F10-11. Cul"rlut"thesolubilityof iron(Il)carbonateinrvater' A. 2.0*10-4 M g 1.gx1g-21 y 6. 1.3x1g-31 y D. 3.2*LO4M @'''*'O* te tDz A fe"^ , Cor' "'!i _ o -'6- o lix o 3.7'r'1g-l2N'I sodiurn 17. will aprecipitateformif 5-lmLc.f J.5"10-Lr M zinc(Il)nitrate ismireclrvith 17mLof hvdroxide ? ,f,r- ftO value is 2.gx19-41, so precipiiate rvill not form' 7niffiti, +:NaUH + ;h{$ii} + \fr "# q value is 2.6*19-29 , so precipitate will not form' C. Q value 3 2-6*19-29 , so precipitate will form' z6 [oH), * f?\ ?"t.' z6t1 - D. Q value it 2.gx16-41, so precipitate will form' E. \trne of ihe aL,or e are Correct. L.f. C z*'tl r5\12 = l.t.l.ls-rY &1, -.tt ,,, , (L::!-,11(:::.) Q,(3.{..to-'*). 5,1 r- lT v-L - *10-'? M (? t"G t/s -r: \, 3.Ll , t.11 , lo-ql N a b\"1" -+ t.i ll.l' z*to-,' )((?*c) ar M,'&t _. -- (a 2.,2.'o-tZ \ I ?.7 * lo-tz S.l { l? h^L O1 y' 'o }.tot, / tA - tz sr*Fr -+ fvl YYT t^{t r,'',c+ r2 J Page:1, { €*rr-t.r! CHEM 1 020.01 Final Exam Adams MAY 3, ?A17 Version H There are 42 questions on the exam. Put answers to 1-21 (7 points each) on the FRONT of the Scantron and answers to 51 - 71 (3 points each) on the BACK of the Sca ntro n. ******************x **************************************** 18. Hor.i*u.6210p5:.:,i-nsfrrrnra--ir,r s:,1ritsampleetrer-i[r.0re:i.]Thehali-lifeoftheradioactiveelernent2lOpS1. 2 1 r ears. A. -15 erams F