Tiêu đề De chinh thuc -SPT- Hoa Hoc.pdf ✅

PhAn cloan Xdng nhc Naphtha DAu l[ra Ddu diesel Khoang nhist d0 s6i 290C-85"C 85 0C - 170 0c 170 "c - 230 "c 230 0c - 300 "c Cflu 6. TrCn ph6 kh6i luqng cua mQt alcohol don chuc Z ru6t hi€n peak (pic) crJra ion phAn tu [M*] tmg vdi gi6 tri mlz:74.Khi dun n6ng Z, co mit sulfuric acid ddc, o nhi6t d0 thich hop thi thu tlugc mdt alkene duy nhAt. 56 c6ng thuc cdu tao pht hqp v6i Z ld A. 1. 8.2. C. 3. D. 4. CAu 7. Srin phAm thu clugc sau qu6 trinh tidn xu li dAu th6 dugc clem chrmg c6t phan do4n thi thu dugc xdng nhg, ddu diesel, ddu lua, naphtha,... Khoing nhiEt t10 s6i ctra c6c phAn doan trong qu6 trinh chung c6t dAu mo o suAt c[ra mdt nhd m6 cho sau Thu tu thu du Hz + zOH-. B .2HzO --- Oz + 4H* * 4e. C. Na* * e --+ Na. D. Oz + 4lln * 4e ---+ ZHzO. C.f,u 13. Cysteine (R-SH) ld mQt amino acid qu nhi6n chua nh6m -SH, dong vai trd quan trong trong c6u truc cira protein do sr,r hinh thdnh li6n k6t cAu disulfide (-S-S-). "Qu6 trinh tuong tu xdy ra khi cysteine bi oxi h6a boioxygen kh6ng khi, tpo thdnh cystine (R-S-S-R). De x6c dinh hdm lugng cysteine dd bi oxi hoa, nguoi ta chu6n dQ phan cysteine con lai bdng dung dich AgNO3 theo phuong trinh h6a hgc sau: R-SH+Ag*+R-SAg+H+ N6ng dQ ban dAu cua cysteine trong mQt mAu dung dich ld 4,00x104M. Sau m6t thoi gian bAo quin, nguoi ta xdc dinh hdm lugng cysteine di bi oxi h6a trong dung dich.ney (\i hiQu ld ft) jh9o. phuong ph6p tren. LAy 10,00 mL A1 cho vdo binh tam gi6c, th6m c6c h6a chdt cdn thiOt, r6i chudn d.Q bdng dung dich AgNO:5,1x10+M. ThC tich trung binh cta dung dich AgNO: dd.dung sau 3 ldn chu6n d0 ld 6,65 mL. Phin tram cysteine dd bi oxi hoa ld bao nhi6u? (Ldm trdn k1t qud d€n hdng phdn trdm). A.8,48. B. 15,21. C.33,92. D.84,79. Cflu 14. C6u trirc cua phuc ctr6t SiCt+12- (at) va [Ni(CN)a]2 (A2) duqc cho d hinh ben. Ph6t bi6u ndo sau clAy kh6.ng dirng vd A1 vit M? A. Li6n kdt giua ptrOi ttl vd nguy€n tu'trung t6m trong A1 vd A2 ld li6n k6t cho - nhQn. B. Ca Al vd A2 d6u ld ion dm. C. Dpng hinh hgc cua Al vi A2 lAn luqt ld vu6ng phdng vd tu diQn. D. 56 lucrng ph6i tu trong Al vd A2 d0u ld 4. Ciu 15. Ester tgo thdnh tu phan img ester h6a giria propanoic acid vd ethyl alcohol c6 ten la A. propyl ethanoic. n. propyl ethanoate. C. ethyl propanoic. D. ethylpropanoarcy' Trang 214 -MdOe tni +SO 2- CN l-[
CAu 16. TrCn phd kh6i luong cira amine E xu6t hi6n peak (pic) cira ion ph6n tu [M*] ung vdi gi6 tri mlz:73. Co bao nhi6u d6ng phin cAu tao cua E ld amine dcrn chric, b0c mQt? A.4. B. 3. C. 5. D. 6. Cflu 18. C6c kim lo4i ndo sau d6y thudng clugc diAu ch6 bing phucrng ph6p nhiQt luyQn? A. Cu, Ag, Na. . B. Ni, Cu, Ca. C. Fe, Al, Ag. P. Fe, Ni, Zn. Cf,u 19. Gi6 tri tha5 dipn cgc chudrr cfia Mg2*iIvIg, Fe2*/Fe, Pb2*lPb, Cu2*/Cu lAn luot lit: -2,36 Y; 4,44 Y; -0,13 V; +0,34 V. Theo phuong phdp diQn h6a, dd b6o vq thiCt bi ldm bdng th6p khoi sg dn mdn diQn h6a thi kim loai ndo sau ddy pht hq,Ir ldm kim loai hi sinh? A. Cu. B. Pb. C.Mg. D. Fe. Cflu 20. DC x6c dinh hdm lugng .it trong m6t m6u quAng, nguoi ta chuydn 1,795 gammAu qu4ng ndy thdnh dung dich, sau d6 khu todn bQ sdt trong dung dich thdnh dang Fe(II) vd th6m nu6c c6t de pha thdnh 250,0 mL dung dich. ChuAn d6 20,00 mL dung dich thu duoc bing dung dich KzCrzOt 0,0100 M trong m6i trudng ,.id H2SO+ lodng du thi dtng htit 18,60 mL dung dich KzCrzOt. Bi6t trong phin ung chuAn <16 tr6n, Crzotz bl khir vd Cr3* theo phuong trinh sau: Cr2O72- + 14H* + 6e - 2Cr3* + THzO Phdn trdm khdi luqng sAt t.o,rg m6u qudng tr6n ld bao nhiOu'/ (Bd qua dnh hv(mg cia tqp chat. Ldm n'dn k€t qua ddn hdng phin trdm). A. 43,52. B. 1,74. C.7 ,25. D.21 ,76. Phin II (2 tli0m). Thi sinh trd ldi cau l, cdu 2. Trong mdi y a), b), c), d) 0 tung cau, thi sinh chgn drtng hodc sai. Cflu l. Khi dun n6ng muiii ngflm nudc CuSO+'nHzO o khodng 250'C thi nuoc trong muoi bay hoi md kh6ng kdm theo rq pha, hty Cua CuSOq. D6 xric dinh c6ng thirc h6a hgc cua muSi CuSO+'nHzO (coi nhu hhdng chira tap ch6t), mQt thi nghiQm 9ugc thgc hiqn theo c6c bu6c nhu sau: - Buctc l: CAn cdc sir kh6, ghilai ttrOi lugng mo. Th€m mQt luqng,or6i CrrSO+'nHzO viro c6c, c6n c6c Ciu 17. ptj Uao qu6n m6t s6 kim loai hopt dQng h6a hqc m4nh, ngudi ta thucrng ng6m chim chtng trong ddu h6a khan (d : 0,80 g crn-3). Kh5i luong ri6ng cta mQt so kim loai nh6m IA,.IIA duoc cho trong bAng b.6n. Trong c6c kim loai d5 cho, s6 kim loai bio quan duoc bing cSch ng6m A.3. B. 1. C.2. thoi gian (r dugc sau chua mu6i, ghi lai kh6i luqng mr. - Buoc 2: Nung cdc chria mu6i cv khoAng 250 oC tir 30 t6i 40 phirt. Quan s6t thAy mudi trong.c6c chuy6n tti mdu xanh sang mdru tring. ! - Baoc 3: LAry c6c sau khi nung 6 hu'ctc 2 d0 trong binh hrit 6m tcri khi ngu6i hodrn toirn, rOi clem cdn. KhOi lugng cdn ilugc ki hiQu ld mz, Ghi lai giri tri mz lAn 1. - Brbc 4: Nung ti€p c6c d bw6c -l th6m l0 - 15 phtt, sau d6 thUc hiQn hrcrng t.u Kim loai Li Na K Ca d, gcm-3 0,53 0,97 0,86 1,54 trong dAu hoa khan ld D.4. Gi6 lTt r l1 27 l0 976 m2 3 l0 895 nhu broc 3, ghi lai gi6 fi mz l?n 2. Lap lai Otrailva giri lai gi6 tri mz l6n 3 thi th6y ch€nh lqch v6i gi6 tri mz lAn 2 khdng d6ng k6 (duoi 0,005 gam). Gi6 tr1 mz lin 3 duoc su dpng OO tinh to6n. Ktit qu6 thi nghiQm dugc ghi trong bang bOn. a) Kh6i lugng CuSO+'nHzO da l6y o brbc I litO,77O gam. b) O badc,3, *0. dich cria viQc dC c5c su trong binh hrit 6m ld d6 han ch6 sU khu Cu(II) thdnh Cu. c) Trong cdc sri sau khi nung o brbc 4 c6 CuSO+ khan. d) Cdng thuc h6a hoc ctra mu6i ngdm nu6c ld CuSO+'7HzO. Cflu 2. M-Qt nhom iroc sinh ti6n hdnh nghi€n ciru t6c d0 cira phdn ring thuy phAn methyl acetate trong m6i tnrcrng ki6m (dung dich NaOH) o mQt nhi€t d0 x6c dinh. K6t qui x6c dinh n6ng clQ NaOH (CNuou) theo Tai thoi di6m r:0, ndng dQ methyl acetate ld 0,01000 M. a) T6c d6 ti6u thu methyl acetate bang t6c d0 ti6u thg NaOH. ni fOc db phan iing trung binh trong khodng thoi gian tu t : 7 phirt toi t:10 phrit g6p hcrn 3 lin tdc d0 phAn c) Trong 5 n'lo l0 125 I 2 l0 98 t, phrit 0 3 5 7 10 l5 25 CNuog, M 0,01000 0,00740 0,00634 0,00550 0,00464 0,00363 0,00254 d) Sau 7 Trang 314 -Mdd€ thi456 CO Kh6i lucms
B. vrEr rRtN ro crAv ruI trinh bdy ldi giai. Cflu l. KEt qui phdn tich nguy6n t6 cira mQt ho-p chAt hiru co Q cho th6y phAn trdm kh5i luong cira carbon vd hydrogen lAn luqt ld, 62,O7yo vir lO,34o/o, cdn lai ld oxygen. TrCn ph6 kh6i luqng cta Q xu6thiQn peak (pic) cta ion phAn tu'[M-] vdi mlz: l16. TrCn phO hOng ngoai cira Q xu6t hiQn peak hdp thp manh o s6 s6ng 1730 cm-r, kh6ng xu6t hiQn peak h6p thir o s6 s6ng d4c trung cho nh6m O-H. Khi thui ph0n Q trong dung dich NaOH thu dugc sodium butanoate. Vi6t c6ng thric cliu t4o phu hqp cua Q. CAu 2. Khi sAn xu6t nh6m bing phuong ph6p diQn ph6n n6ng ch6y AlzO:, su dung c6c di6n cuc than chi, anode thuong xuy6n bi hao hut do ph6n img voi m6t sdn phAm cua qu6 trinh cli6n phdn. Vitit c6c phuong trinh h6a hgc gi6i thich hiqn tugng hao hpt anode niry. Cflu 3. C6ng thuc cia mQt loai polymer thu dugc tu ph6n img trung ngung hai monomer Ml vd M2 nhu sau: oo {ttH CH ,$*r-8-1cHr1.-8\ Vi6t cong thuc c6u tao phu hgp cira M1 vd M2. Cf,u 4. Sodium hydroxide dugc di6u ch6 bing phuong ph6p diQn phdn dung dich NaCl c6 mdng ngdn rli6n cuc. Tinh th6 tich (theo lit) dung dich NaCl 20% (d: 1,15 g cm-3) cin dung Oe Oieu ch6 200 gam sodium hydroxide. Cia tnitit higu su6t cira qu6 trinh di6u ctrtl ta 80%. (Ldm trdn kd qud dAn hdng phin tram). Phin IV (2 ttiOm). Th{ sinh trinh bdy diy dn bi gidi cdu 5. Cflu 5. Ethanol duqc phdi tr6n viro xdng truydn th6ng theo ti lQ nh6t dinh d6 tao thdnh xdng sinh hoc. M6t lit xdng sinh hpc ts10 dugc tpo ra bing c6ch tr6n 100 mL ethanol voi 900 mL xdng truydn th6ng (bo qua sqr thay drii thd tich khi trQn). Ethanol thtrong dugc siin xu6t bing phuong phdp l6n men c6c nguy6n li€u chua nhidu tinh bOt hoac clucrng. Tinh bQt ld m6t srin phAm thu dugc trong qu6 trinh quang hqp cua cdy xanh. a) Vi€t phucrng trinh h6a hoc m6 td qurl trinh quang hqp tao thdnh tinlr b6t vA c6c phucrng trin} h6a hoc di€u che ethanol tu tinh bot. b) Su dr,rng gi6 tri ndng luo,ng li6n kiit trung binh (Err.) cho trong bdng b6n, tinh ti s6 giira luqng nhiQt toa ra (o didu kiqn chuAn) khi ddt ch6y hodn todn I lit xdng ElO so v6i khi d6t chrly hodn todrn I lit xdng truyAn th6ng c) Luong COz sinh ra do dot ch6y cthanol trong xdng sinh hqc kh6ng bi tinh vho t6ng luqng ph6t thai carbon vi coi nhu dugc bu tru bing vi6c t6i su dung COz trong qu6 trinh quang hqp. Vi v{y, su durrg xlng sinh hgc ld mQt biQn ph6p g6p phAn b6o vq m6i truong. Luo.'ng ph6t thai carbon khi d6t ch6y hodn todn nhi6n liQu dugc tinh bing lugng COz sinh ra. N6u coi lugng ph6t thdi carbon khi d6t ch6y hodn todn I lit xdng truyAn th6ng Id 100% thi luong ph6t thai carbon khi ddt ch6y hodn todn 1 lit xlng El0ld bao nhieu phdn trlm? Cho bidt: fhOi luong ri6ng cira ethanol vd xing truydn th6ng lin luqt ld 0,789 g cnr'.3 vd 0,703 g cm 3- Trong cdc tlnh todn tr\n, coi xdng truyin th6ng ld hdn hqp cdc ding phan octane (CxHti-/ -/ /r HET Ghi chil: Thi sinh kh6ng dw.tc si d4ng tdi li€u. Can bo coi thi kltong giai thic:h gi thAnt. Li0n ktit C_C o:o C:O Ett, kJ mol-l 347 4t3 498 358 805 464 C-H c-o o-H Trang 414 -MddC thi 456