IChO 41 bài thi lí thuyết (vi)

IChO 41 bài thi lí thuyết (vi) IChO 41 bài thi lí thuyết (vi) IChO 41 bài thi lí thuyết (vi) IChO 41 bài thi lí thuyết (vi) IChO 41 bài thi lí thuyết (vi) IChO 41 bài thi lí thuyết (vi) IChO 41 bài thi lí thuyết (vi) IChO 41 bài thi lí thuyết (vi) IChO 41 bài thi lí thuyết (vi) IChO 41 bài thi lí thuyết (vi) IChO 41 bài thi lí thuyết (vi) IChO 41 bài thi lí thuyết (vi) IChO 41 bài thi lí thuyết (vi) IChO 41 bài thi lí thuyết (vi) IChO 41 bài thi lí thuyết (vi) IChO 41 bài thi lí thuyết (vi) IChO 41 bài thi lí thuyết (vi) IChO 41 bài thi lí thuyết (vi) IChO 41 bài thi lí thuyết (vi) IChO 41 bài thi lí thuyết (vi) IChO 41 bài thi lí thuyết (vi)

ｾ 41st INTERNATIONAL CHEMISTRY OLYMPIAD UK JULY 18-27, 2009 HQ va ten: s6 bao danh: VNM - S4 Chi dan chung ca cac trang phil!u bai lam • Vil!t tt!!n va s6 bao danh tren dau tat • C6 gia ､ ｾ lam bai thi Chi dU'Q'C bat dau lam bai ｣ Ｖ Ｑ ｾ ｮ ｨ START • ChJ sti dl,mg may tfnh dU'Q'C cap • cac ｫ ｾ ｴ qua tra lai mOi tau hoi phai dU'Q'c vil!t khung quy djnh clIa Tat phil!u tra lai Lam khac quy djnh sa khOng dU'Q'c ､ ｩ ｾ ｭ Ｎ Nl!u can giay nhap thl sti dl,mg ｭ ｾ ｴ sau to' giay thi • Khi can ｴ ｨ ｩ ｾ ｴ Ｌ phai ｶ ｩ ｾ ｴ cac tinh toan c6 lit!!n quan vao khung tU'O'ng ling clla bai thi e6i vai cac bU'ac tinh toan phlic ｴ ｾ ｐ Ｎ nl!u thr sinh khOng dU'a cac phep tinh rna chi ｶ ｩ ｾ ｴ ｫ ｾ ｴ qua cu6i cung thi sa khOng c6 ､ ｩ ｾ ｭ Ｎ • Cac C8U tn\ 1M c6 chQl 56 sa khOng c6 gia tri nAu viAt thiAu cac dan vi th(P nguy6n thfch hQ'P Thf sinh sa bl tJir m6m n,ng nAu khOng viAt cac dan vi vao cac dap 56 y6u cAu Thr sinh cOng phai IU'U y vil!t dap s6 v6i cac chO> s6 c6 nghia • Coi tat ea cae khf ､ ｾ ｵ • Phai dll'ng him bai ｣ Ｖ Ｑ ｾ ｮ ｨ STOP ｎ ｾ ｵ keo dai sau ｨ ｩ ｾ ｵ ｉ ｾ ｮ ｨ thl bai thi sa bi hllY bo • Khi lam xong bai thi, phai ､ ｾ ｴ tat ca cac trang bai lam phong bl dU'Q'C cap KhOng dU'Q'c dan phong bl • KhOng rai khoi chOlam bai chU'a dU'Q'c phep clla giam thi • ﾣ Ｉ ｾ thi gOm 42 trang • ca la If tU'ang C6 ｴ ｨ ｾ ､ ｾ nghi giam thi cho xem ban ban ｔ ｩ ｾ ｮ ｧ Anh ､ ｾ thi chrnh thlic cua ､ ｾ thi nay, nhU'ng chT ､ ｾ d6i ｣ ｨ ｩ ｾ ｵ Ｎ Page 1/42 ｾ 41st INTERNATIONAL CHEMISTRY OLYMPIAD UK JULY 18-27,2009 HQ va ten: 56 bao danh: VNM - 54 Cae hing 56 ｖ ｾ ｴ If va cong thCre eAn thiit Name Symbol Value S6Avogadro NA 6.0221 x 1023 mor1 Hang s6 Boltzmann Ice 1.3807 x 10.23 J ,,1 Hang s6 khf R 8.3145 J K-1 mor1 Hang s6 Faraday F 96485 C mor1 TOc de) anh sang c 2.9979 x 108 m s-1 Hang s6 Planck h 6.6261 x 10-34 J s Ap suat chuAn pO 105 Pa Ap suat khf ｱ ｵ ｹ ｾ ｮ patIn 1.01325 x 105 Pa o°c thang Celsius Gia t6c rai tl,l' chuAn Bohr magneton (Manheton Bo) ｴ ｩ ｾ ｵ 273.15 K 9.807 m S-2 PB 9.274015 x 10-24 J,-1 ｔ ｨ ｾ Hch hinh ｉ ｾ ｰ phuang V=? ｔ ｨ ｾ lich hinh cau V= ｾ Ｗ ｴ ｲ ｔ ｨ ｾ nang trQng tJ'U'ong E=mgh PhU'O'ng trlnh khf If tU'ang pV=nRT PhU'O'ng trlnh Arenius k = A exp (-E3 I COng thlic trnh momen tCl' chi cho Spin J.1eff= Rn ｾ ｮ Ｈ ｮ + 2) Bohr magnetons Page 2142 ｾ 41st INTERNATIONAL CHEMISTRY OLYMPIAD HQ va ten: UK JULY 18-27, 2009 s6 bao danh: VNM - 54 Periodic table with relative atomic masses - 18 r H He 1.00B 13 14 15 16 17 10 LI Be B C N F Na 6.94 9.01 10.81 12.01 14.01 16.00 19.00 20.18 11 12 13 14 15 16 17 18 Na Mg AI Si P S CI Ar 26.98 28.09 30.97 32.06 35.45 39.95 31 32 33 34 35 36 22.99 24.31 21 22 19 20 K Ca Sc Ti 39.102 40.08 44.96 37 38 Rb Sr 39 25 26 27 12 30 24 V Cr Mn Fe Co Ni Cu Zn Ga Ge As Sa Br Kr 47.90 50.94 52.00 54.94 55.85 58.93 58.71 63.55 65.37 69.72 72.59 74.92 40 41 42 43 44 45 46 47 48 49 50 51 Y Zr Nb Mo Tc Ru Rh Pd Ag Cd In 78.96 79.904 83.80 52 Sn Sb Te 53 54 I Xe 101.07 102.91 1064 107.87 112.40 114.82 118.69 121.75 127.60 126.90 131.30 87.62 88.91 91.22 92.91 95.94 55 56 57 72 73 74 75 Cs Ba La- Hf Ta W Ra Os Ir 132.91 137.34 138.91 178.49 180.95 183.85 186.2 88 11 29 23 85.47 87 10 28 76 190.2 77 78 79 80 81 Pt Au Hg TI 82 83 Pb Bi 84 85 192.2 195.09 196.97 200.59 204.37 207.2 208.98 Fr Ra Ac+ 58 59 61 62 63 64 65 66 67 68 69 70 71 Ce Pr Nd Pm Sm Eu Gd Tb Oy Ho Er Tm Yb Lu 14a12 14a91 90 +Actlnldes 60 91 Th Pa 232.01 144.24 lSO.4 151.96 157.25 15a93 95 98 164.93 167.26 168.93 17104 174.97 98 99 100 101 103 93 U Np Pu Am Cm Bk Cf Es Fm Md No Lr 238.03 Page 3/42 97 16250 92 94 86 Po At Rn 89 ·Lanthanldes 4.003 102 ｾ 41st INTERNATIONAL CHEMISTRY OLYMPIAD UK JULY 18-27,2009 Hq va ttm: s6 bao danh: VNM - S4 Sai 10 , % ,., tong so diem Tinh 50 Avogadro 1a 1b 1c 1d 1e 1f 19 1h 1i 1j 1k 4 2 3 C6 ｮ ｨ ｩ ｾ ｵ phU'O'ng phap xac djnh dU'O'c trlnh bay dU'6'i day so Avogadro Sa TOng 36 s6 cac phU'O'ng phap d6 PhLPO'ng phap SLP dlJng cac dCP kitn nhiiu x, tia X (phLPO'ng phap hitn c1,i) oｭ ｾ ｮ ｧ cO' So' la dO'n vi cau trUc nhe nhat dU'O'c ｉ ｾ ｰ ｉ ｾ ｩ cau truc tinh ｴ ｨ ｾ Ｎ PhU'O'ng phap ｮ ｨ ｩ ｾ ｵ ｸ ｾ tia X cho ｢ ｩ ｾ ｴ ｲ ｾ ｮ ｧ ｭ ｾ ｮ ｧ cO' So' cua tinh ｴ ｨ ｾ vang c6 cau trUc ｉ ｾ ｰ phU'O'ng tam ､ ｩ ｾ ｮ (tCrc la tam cua mOi nguyen tll' ｮ ｾ ｭ cac dinh cua hlnh ｉ ｾ ｰ phU'O'ng va tam ､ ｩ ｾ ｭ cua mOi ｭ ｾ ｴ Ｉ Ｎ ｃ ｾ ｮ ｨ cua ｭ ｾ ｮ ｧ ｢ ｾ ｮ ｧ 0,408 nm a a) Va phac theo mc)t mc;mg cO' So' va tfnh xem mOi ｭ ｾ ｮ ｧ nguyen tll' Va ｭ ｾ ｮ ｧ cO' So': s6 nguyen tlr Au mc)t ｭ ｾ ｮ ｧ cO' So': Page 4/42 chCra bao nhieu ｾ 41st INTERNATIONAL CHEMISTRY OLYMPIAD UK JULY 18-27,2009 H9 va ten: 56 bao danh: VNM - 54 b) KhOi 1U'Q'ng rieng cua vang la 1,93.104 kg.m-3 Hay tinh ｴ ｨ ｾ tich va khOi 1U'Q'ng cua ｭ ｾ ｮ ｧ ｉ ｾ ｰ phU'ang ca sa ｔ ｨ ｾ tlch: KhOi 1U'Q'ng: e) Tlnh khOi 1U'Q'ng cua mOt nguyen tti vang va s6 Avogadro Cho nguyen tli khOi cua vang la 196,97 Kh6i 1U'Q'ng cua mOt nguyen tli vang: SO Avogadro: PhllO'r1g phap B - tiP cae dCP kitn phan Iii ph6ng lql (PhlFO'llg phap Ra-za-fo, 1911) Cho chuOi cac phan ri1i bAt dau tu 226Ra: 222Rn 3.825 d 218po 3.10 m 214Pb 26.8 m 214Bi 19.9 m • 214pO 164.3 flS 210Pb 22.3 y 210Bi 5.013 d 210po 138.4 d 206Pb Cac gia trj thai gian ban hOy ghi sa dO ｨ ｾ ｹ theo cac dan vi sau: y = nam, d = ngay, m phut, s giay Phan ri1i dau tien c6 thai gian ban huy rat dai so vai cac phan ri1i khac, dU'Q'c kr ｨ ｩ ｾ ｵ bang chCP t ､ ｾ ｴ tren mUi ten = = Page 5/42 ｾ 41st INTERNATIONAL CHEMISTRY OLYMPIAD UK JULY 18-27,2009 H9 va ten: s6 bao danh: VNM - S4 d) f)anh dau phan nao la phan a, phan nao la phan 13 bang dlJ'ai day: Phan a 226Ra ｾ 222Rn 222Rn ｾ 218pO Ｒ Ｑ Ｖ Ｒ ｰ Ｑ Ｒ Ｔ Ｑ Ｒ ｂ Ｔ Ｑ ｾ ｐ Ｔ Ｑ Ｒ ｏ Ｐ ｾ ｾ ｰ ｾ ｢ Ｑ Ｐ 214Bi 210Pb ｾ 210Bi ｾ Ｒ p 214pO ｏ ｐ 214Pb ｢ ｩ ｐ ｨ ｾ ｭ 210Bi ｰ 21OpO ｏ ｾ 206Pb e) ｍ ｾ ｴ mau chLra 192 mg 226Ra tinh ｫ ｨ ｩ ｾ ｴ dlJ'Q'c giCr 40 f)i theo chuoi ph#ln tren, hay xac djnh dOng vi nao (khong kl! Ra) la dOng vi dau tien khong dti1t dlJ'Q'c trti1ng thai can bang ph6ng ｘ ｾ Ｎ f) Bang cach ､ ｾ ｭ 56 nhap nhay, nglJ'CYi ta X8C dinh dlJ'Q'C t6ng t6c ､ ｾ phat cac ｨ ｾ ｴ a cua mau la 2.77.1010 Bq (1Bq = nhap nhay.5·1) Sau d6, mau dlJ'Q'c giCr blnh kin thai gian 163 Hay tfnh 56 hti1t a tti10 g) ｋ ｾ ｴ thuc 163 ngay, mau chLra 10,4 mm He tfnh 56 Avogadro tll' cac dCr kiti!n trem Page 6/42 a 101325 Pa va 273 K Hay ｾ 41st INTERNATIONAL CHEMISTRY OLYMPIAD UK JULY 18-27,2009 HQ va ten: 56 bao danh: VNM - 54 h) Cho nguyen tCr kh6i eua 226Ra, xac djnh bAng kh6i phO, la 226,65 Hay sli dl,lng gia tri s6 Avogadro cho sach tra CLYU (6,022.1023 mor1) ､ ｾ tinh s6 nguyen tli 226Ra c6 mau ban dau nORa, hang s6 t6c dO phan A va thai gian ban huy t112 (trnh bAng nam) eua 226Ra Chi can quan tam cac phan cho dim ｴ ｾ ｯ dOng vi da xac djnh dU'Q'e ml,lC (e) va khOng ｫ ｾ d!n ea Sl! ph an cua dOng vi a nO _ Ra- A= Page 7/42 ｾ 41st INTERNATIONAL CHEMISTRY OLYMPIAD UK JULY 18-27,2009 HQ va ten: s6 bao danh: VNM - PhU'O'ng philp C - S"" phAn 54 bO h,t (Perrin, 1909) M¢t cac phU'O'ng phap chrnh xac dau tien ､ ｾ xac djnh s6 Avogadro la nghien cCru SI,I' phAn b6 theo phU'O'ng ｴ ｨ ｾ ｮ ｧ dCrng cua cac ｨ ｾ ｴ keo, dU'Q'c nhO tU'O'ng hoa nU'oc, dU'oi tac dl,lng cua Il,J'c Trong m¢t thr ｮ ｧ ｨ ｩ ｾ ｭ nhU' v$y, cac ｨ ｾ ｴ c6 ban krnh 2,12.10-7 m, kh6i lU'c;mg rieng 1,206.103 kg m-3 dU'Q'c nhO tU'O'ng hoa mot 6ng chlia nU'oc a 15 DC Sau thai gian can ､ ｾ ､ ｾ ｴ ､ ｾ ｮ cAn bAng, ngU'ai ta ､ ｾ ｭ dU'Q'c s6 1U'Q'ng trung blnh cua cac ｨ ｾ ｴ mot dO'n vi ｴ ｨ ｾ trch, quan sat dU'Q'c d¢ cao khac so voi day 6ng: a d¢ cao (1 0-6 m) s6 ｨ ｾ ｴ trung blnh 4,00 m¢t dO'n vi the trch 35 65 95 1,88 0,90 0,48 I) Gia dinh cac ｨ ｾ ｴ c6 hlnh cau Hay trnh: kh6i 1U'Q'ng m cua mOi ｨ ｾ ｴ ［ kh6i 1U'Q'ng nU'oc bi ｨ ｾ ｴ chil!m chO mH20; kh6i 1U'Q'ng hi(!u dl,lng cOn ｉ ｾ ｩ m* cua ｨ ｾ ｴ nU'oc ､ ｾ ｨ ｩ ｾ ｵ dU'Q'c nguyen nhan cua SI! nOi 10' lung (chu y rAng sCrc ､ ｾ ｹ lam v$t nOi len lien quan voi thti trch nU'ac bi ｣ ｨ ｩ ｾ ｭ chO) Cho kh6i 1U'Q'ng rieng cua nU'oc la 999 kg.m-3 • m= mH20 m*= Page 8/42 = ｾ 41st INTERNATIONAL CHEMISTRY OLYMPIAD UK JULY 18-27,2009 HQ va ten: s6 bao danh: VNM - 84 aｴ ｲ ｾ ｮ ｧ thai can bang, s6 hCilt mot dan vi thl! tich c6 thl! tuan theo phan b6 Boltzmann: a nhCrng cao khac !!.JL = exp[- Eh - Ella ] nlla Trong d6, RT 113 s6 ｨ ｾ ｴ mot dan vi thl! tich a cao h, nh adQ cao tham ｣ ｨ ｩ ｾ ｵ ho nang trQng tllJ'cmg cua m9t mol hCilt a cao h so vai day 6ng 113 s6 ｨ ｾ ｴ mot dan vi thl! trch nhO Eh 113 ｴ ｨ ｾ Ria hang s6 khf 8,3145 J ,,1 mor1 Dung cac s6 lili!u cua bang tren, ngLPai ta va dO thi dU'ai day ｶ ｾ Sl,l' phI,! thuQc cua In(nJ/nho) vao (h-ho) £>0 cao tham ｣ ｨ ｩ ｾ ｵ dLPQ'C lay 113 J.IITl tCr day 6ng h- hoI J.1m ｾ Ｏ o o.lY -c: -0 R -ｾ c -1 -1 ｾ 20 ｾ 40 60 ｾ ｫ Ｂ 100 80 ｾ " -2 '" -2 Page 9/42 " ｾ 41st INTERNATIONAL CHEMISTRY OLYMPIAD UK JULY 18-27,2009 HQ va ten: s6 bao danh: VNM - S4 j) Rut mOt ｢ ｩ ｾ ｵ there ｢ ｩ ｾ ｵ dian h(! sO g6e ella dO thi k) Tfnh sO Avogadro tll' eae dCr ki(!n ella dO thi Page 10/42 ｾ 41st INTERNATIONAL CHEMISTRY OLYMPIAD UK JULY 18-27.2009 HQ va ten: s6 bao danh: VNM - 54 10 % tang Bai s6 ､ ｩ ｾ ｭ Nhlla Epoxy 5a Sa A B 2 5b 5c 5c Sc 5d 5e E F G H 3 5f 5g 5h 5h Sh Si Sj 5k I J K L M N TAng 35 TOng hgp nhlla epoxi ｴ ｲ ｾ ｮ toan ｴ ｨ ｾ giai la mOt n6n eOng ｮ ｧ ｨ ｩ ｾ ｰ ｴ ｾ gia hang ti dO la Nhlla epoxi la cac chat k6t dlnh ｨ ｩ ｾ ｵ qua cao dU'ooc tOng hOOp tCr phan ling eua bisepoxit vai diamin HOOp chat bis-epoxit dU'ooc ､ ｩ ｬ ｾ ｵ ch6 tCr H va epiclohidrin C Cac chat C va H dU'ooc tOng hOOp theo cac sa dO dU'ai day C12 • hv ｾ • D A HOCI H+ + ｾ OH O2 • G H+ • B ｾ ｃ C ｉ D + E + F A• H +1 Hel TOng hOOp epiclohidrin C bat ､ ｾ ｵ tCr phan (rng eua propen vai clo c6 ｭ ｾ ｴ eua anh sang Page 28/42 '" co ｾ 41st INTERNATIONAL CHEMISTRY OLYMPIAD HQ va ten: UK JULY 18-27, 2009 s6 bao danh: VNM - S4 a) Ve eae eau true ella A va B A B b) Vi€!t cOng thCrc ella mot tae nhan thieh hgp dung ､ ｾ ｣ ｨ ｵ ｹ ｾ ｮ hoa B epiclohidrin C TOng hQ'p H ｢ ｾ ｴ dau tCY phan (rng cua benzen vai propen co ｭ ｾ ｴ xue tac axit cho o la san ph'm chfnh, E va F la san pham phl,J c) Ve cae cau true cua 0, E va F suy tCY cae dO> lieu sau: 0: Thanh phan nguyen t6: C 89,94%; H 10,06%; tin ｨ ｨ ｾ ｵ phO 13C NMR E: Thanh phan nguyen t6: C 88,82%; H 11,18%; tin hieu phO 13C NMR F: Thanh phan nguyen t6: C 88,82%; H 11,18%; tin hieu phO 13C NMR Page 29142 ｾ 41st INTERNATIONAL CHEMISTRY OLYMPIAD UK JULY 18-27.2009 HQ va tim: 56 bao danh: VNM - 54 o F E Khi SI,JC oxi qua dung djch n6ng cua thi ｴ ｾ ｯ G; cho G ｴ ｩ ｾ ｰ xuc vai axit thu dU'Q'c phenol (hidroxibenzen) va axeton (propanon) G lam giay tam tinh bOt-iot chuyen tll' trang xanh sam G c6 tin ｨ ｩ ｾ ｵ ph6 13C NMR va cac tin ｨ ｩ ｾ ｵ sau day ph6 1H NMR: 07,78 (1 H, s); 7,45-7,22 (5H, m); 1,56 (6H, s); cho 20 vao chat G lam mat di tin ｨ ｩ ｾ ｵ (y 0= 7,78 d) Va cau truc cua G G Cho phenol va axeton ｴ ｩ ｾ ｰ xuc vai axit clohidric thu dU'Q'c hQ'p chat H Ph6 13C NMR cua H dU'Q'c neu (y Fig Ph6 1H NMR dU'Q'c neu (y Fig cung vai vung ph6 tll' 6,5 -7,1 ppm dU'Q'c ph6ng ､ ｾ ｩ len Ian Ph6 1H NMR thu dU'Q'c sau cho vao mOt giQt 20 dU'Q'c neu (y Fig Cac pic cua dung mOi dU'Q'c danh dau (*) Page 30/42 Y! H9 va tim: 41 st INTERNATIONAL CHEMISTRY OLYMPIAD UK JULY 18-27, 2009 56 bao danh: VNM - 54 Fig 1''''''1 200 180 ""I'" , ·1 160 "'1'''' '''I' , "'1'''' "I' 140 120 } J1 ｾ "I"'" 'I 100 'I"" BO ""I""'" 1""""'1" 40 20 '1" 60 Fig I 10.0 I ＷｾＰ I I I I ＶｾＵＪ *I I I I I I I I I 9.0 B.O 7.0 6.0 5.0 4.0 3.0 2.0 Fig I 10.0 I I 9.0 B.O It * ｾ *I J J I I I I I I 7.0 6.0 5.0 4.0 3.0 2.0 e) Ve eau true ella H H Page 31/42 I 1.0 i 1.0 1"""'1 Oppm I 0.0 ppm I 0.0 ppm ｾ 41st INTERNATIONAL CHEMISTRY OLYMPIAD UK JULY 18-27, 2009 HQ va ten: s6 bao danh: VNM - 54 f) Va mot cau true eong hU'ang eua phenol ｣ ｾ gisli thfch SI,J' chc;>n 1ge vung tt;lO H Mot hgp ehat thll' hai I eLmg tt;lo phan Cl'ng eua phenol vcYi axeton PhO 13C NMR cua I c6 12 tfn ｨ ｩ ｾ ｵ Ｎ PhO 1H NMR eua n6 e6 nhCl'ng tfn ｨ ｩ ｾ ｵ sau: 87,50-6,51 (SH, m); 5,19 (1H, s); 4,45 (1H, s); 1,67 (6H, s); Cho D20 vao lam mat ci 5,19 va 4,45 eac tin ｨ ｩ ｾ ｵ a g) Va cau truc eua I Phenol dU' phan lI'ng vcYi epiclohidrin C eo ｭ ｾ ｴ eua bazO' eho hgp ehat L, phO 13C NMR eua n6 tfn ｨ ｩ ｾ ｵ Ｎ ｎ ｾ ｵ nglJ'ng phan Cl'ng giCl'a ehll'ng thl cOng eo ｴ ｨ ｾ thu cU'ge cae ehat J va K Chat L cU'ge tt;lO tlJ' chat K, eon ehat K tt;lO tll' chat J Page 32/42 ｾ 41st INTERNATIONAL CHEMISTRY OLYMPIAD UK JULY 18-27,2009 HQ va ten: 56 bao danh: VNM - 54 OH o + ｾ ｃ ｉ base Ｍ Ｍ Ｍ Ｍ Ｑ ｾ ｾ C9H11 CI0 J C Ｍ Ｍ Ｍ Ｑ ｾ ｾ C H100 K h) Ve cac cau truc cua J, K va L J K L Xli If H vai m¢t 1U'Q'ng dU' epiclohidrin C va bazO' cho m¢t monome bis-epoxit M Chat M khong chlia cac nguyen tli c/o ｨ ｯ ｾ ｣ cac nhom OH Page 33/42 ｾ 41st INTERNATIONAL CHEMISTRY OLYMPIAD HQ va ten: UK JULY 18-27, 2009 s6 bao danh: VNM - S4 i) Ve cau true cua M M Xli If H vai mOt 1U'Q'ng dU' nho epiclohidrin va bazO' tc;io N Chat N co dc;ing: nhom cuOi 1-[dO'n vi I,p ｉ ｾ ｩ ｝ ｮ Ｍ ｮ hom cuOi 2, vai n xap xi 10-15 Chat N khong chua nguyen tCr clo va co mOt nh6m OH tren moi dO'n vi momome ｉ ｾ ｰ Ic;ii j) Ve cau truc cua N a dc;ing neu tren.(nhom cuOi 1-[dO'n vll,p ｉ ｾ ｩ ｬ ｮ Ｍ ｮ ｨ ｯ ｭ cuOi 2) N k) Ve dO'n vi ｉ ｾ ｰ Ic;ii cua polime nhl,J'a epoxi bis-epoxit M vai etan-1,2-diamin Page 34/42 a OU'Q'C tc;io tl1 phan ung cua ｾ 41st INTERNATIONAL CHEMISTRY OLYMPIAD va tim: HQ UK JULY 18-27, 2009 S6 bao danh: VNM - S4 12% eua tang Bai 56 ､ ｩ ｾ ｭ PhCPe kim IOClli ･ ｨ ｵ ｹ ｾ ｮ ｴ ｩ ｾ ｰ 6a 6b 6c 6d 6e 6f 6g 6h 6i 6j 6k 61 rang 18 4 61 Alfred Werner dung ki ｴ ｨ ｵ ｾ ｴ ｵ ､ ｾ ｭ so dOng phsn" ､ ｾ suy cac ､ ｾ ｮ ｧ cau truc clla cac phlic kim ｬ ｯ ｾ ｩ co so phoi tri la 6, dan ､ ｾ ｮ ba ､ ｾ ｮ ｧ cau truc sau: 1 1 01 1 " x ,,' , Y Z Trong hlnh va clla moi cau truc tren, cac tron trang ､ ｾ ｩ ､ ｩ ｾ ｮ cho nguyen tu trung tsm, cac tron den ､ ｾ ｩ dili!n cho ligand (cau tu) X co diu truc h,!c giac phang, Y la lang tn,! tam giac, va Z la bat ､ ｩ ｾ ｮ Ｎ Chi ca ligand phlic chat la giong nhau, nghia la cong thlic clla phlic chat la MAs (A la ligand), thl moi ､ ｾ ｮ ｧ cAu truc tren chi co mot dOng phsn Khi mot ｨ ｯ ｾ ｣ vai ligand khong quang ｨ ｯ ｾ ｴ A dU'ooc thay ｴ ｨ ｾ bO'i cac ligand khong quang ｨ ｯ ｾ ｴ khac, moi ､ ｾ ｮ ｧ cau truc tren co ｴ ｨ ｾ xuat hili!n cac dOng phsn hlnh hoc f)oi co ｴ ｨ ｾ c6 mot vai dong phsn hinh hQc co ｨ ｯ ｾ ｴ tfnh quang hQc, d6 moi dOng phsn hlnh hQc ton ｴ ｾ ｩ a ､ ｾ ｮ ｧ mot ｣ ｾ ｰ doi quang a) ｅ ＾ ｩ ｾ ｮ vao cac bang dU'ai dsy so dOng phsn hlnh hoc c6 ｴ ｨ ｾ co cho moi cau truc X, Y, Z cac ligand mot cang (dan nha) A dU'Q'c thay ｴ ｨ ｾ bO'i cac ligand mot cang B, ｨ ｯ ｾ ｣ bO'i cac ligand hai cang doi xling, kf hili!u C-C LU'u y rang cac ligand hai cang C-C chi thay ｴ ｨ ｾ vao cac vi trf ｫ ｾ ｣ ｾ ｮ nhau, nghia la vao cac vi trf c6 noi vai bO'i cac dU'ang ke ｉ ｩ ｾ ｮ net ｨ ｯ ｾ ｣ dlit net cac cau truc X, Y, va Z Trong mOi truang hoop, sau ､ ｩ ｾ ｮ so dOng phsn hlnh hQc vao cac xac dinh, ｮ ｾ ｵ mot dong phsn hlnh hQc tOn ｴ ｾ ｩ dU'ai ､ ｾ ｮ ｧ ｣ ｾ ｰ doi quang thi danh them mot dau (*) vao ben ｣ ｾ ｮ ｨ so dong phsn hlnh hoc ｎ ｾ ｵ co hai dong phsn hlnh hoc c6 hai cap doi quang thl them hai dau sao, v.v vr dl,l, ｮ ｾ ｵ Page 35142 ｾ HQ va tim: 41st INTERNATIONAL CHEMISTRY OLYMPIAD UK JULY 18-27, 2009 s6 bao danh: VNM - S4 cho ｲ ｾ ｮ ｧ m{>t cau truc nao d6 c6 nam dOng ｰ ｨ ｾ ｮ cac ｣ ｾ ｰ d6i quang, ｶ ｾ ｹ S9 ghi la 5*** hinh hoc, ba s6 d6 c6 86 dOng phan hinh hQc dl,l' doan MAs Lt.Jc giac phc1ng X Lang tn,J tam giac Y Bat ､ ｩ ｾ ｮ Z 1 MAsB ｍ ｾ ｂ Ｒ MA3B3 ｍ ｾ Ｈ ｃ Ｍ ｃ Ｉ MA2(C-Ch M(C-C)J a Thl,J'c ｴ ｾ chU'a c6 phCrc chat nao dU'Q'c ｢ ｩ ｾ ｴ ､ ｾ ｮ ｧ h,lC giac phcing X NhU'ng cac cau truc lang tn,J tam giac Y va bat ､ ｩ ｾ ｮ Z d!u dU'Q'c ｢ ｩ ｾ ｴ ､ ｾ ｮ Ｎ Trong cac phCrc chat nay, cac orbital d clla nguyen tu kim ｬ ｯ ｾ ｩ bi tach cac mCrc nang 1U'Q'ng khac tllY thuOc vao ､ ｾ ｮ ｧ hlnh hoc clla phCrc chat DU'ai ､ ｾ ｹ la sO' dO tach mCrc nang 1U'Q'ng cac orbital d clla phCrc chat lang tn,J tam giac va phCrc chat bat ､ ｩ ｾ ｮ Ｎ E \' E t M" I -++0-11 .\ DO ｰ ｨ ｾ ｮ tach nang 1U'Q'ng /lE, /lE'va /lE" thay d6i theo tCmg phCrc chat Page 36/42 ｾ b) 41st INTERNATIONAL CHEMISTRY OLYMPIAD UK JULY 18-27,2009 HQ va ten: 56 bao danh: VNM - 54 Trong cac sO' dO tach mCrc nang luoQ'ng sau, hay ｶ ｩ ｾ ｴ ten cac orbital d tuoO'ng Crng v6'i cac mCrc nang luoQ'ng Ca hai phCrc chat [Mn(H 20)6]2+ va [Mn(CN)6]2 ､ ｾ ｵ c6 cau truc bat ､ ｩ ｾ ｮ Ｎ Ｘ ｩ ｾ ｴ ｲ ｾ ｮ ｧ Ｌ mot hai phCrc chat tren c6 momen tCJ' la 5,9 8M, va chat ｉ ｾ ｩ c6 momen tCJ' la 3,8 8M, nhuong thf sinh phai tl,l' xac djnh gia trj momen tCr nao la cua chat nao e) Hay ､ ｩ ｾ ｮ cac electron cua hai phCrc chat tren vao cac gian dO duo6'i day [Mn(CN)612- Page 37/42 ｾ 41st INTERNATIONAL CHEMISTRY OLYMPIAD UK JULY 18-27, 2009 HQ va ten: s6 bao danh: VNM - S4 Momen ttl dU'Q'C cua mOt hai phLrC chat A va cho dU'6'i day la 1,9 BM, momen ttl cua phLrC chat ICili la 2,7 BM, nhU'ng thi sinh phai tl,l' xac djnh gia ｴ ｾ momen ttl nao la cua chat nao 2- CsHs ｾ ｳ / ｾ ｳ ｾｾ ｓ Ｍ ｃ ｳ ｈ Ｕ ) s Re Ｏ S/ B A d) A Va gian db tach mLrc nang 1U'Q'ng cOng v6'i Sl,l' ｳ ｾ ｰ xllp cac electron cua hai phLrC chat tren B PhLrC chat bat ､ ｩ ｾ ｮ rat ph6 billn so v6'i phLrC chat lang tn,! tam giac Werner da co ｉ ｾ ｰ dU'Q'c nam hQ'p chat ttl C - G chi chLra Co(lll), CI, va NH , tat ca cac hQ'p chat ､ ｾ ｵ c6 cau truc mOt bat ､ ｩ ｾ ｮ Ｎ (Ngoai ra, mOt hQ'p chat thLr sau n(fa, nhU'ng Werner khong co ｉ ｾ ｰ dU'Q'c hQ'p chat (6) €>O dan ､ ｩ ｾ ｮ mol cua nam hQ'p chat cua Werner dU'Q'c cho fJ bang ben dU'6'i Cac gia trj dO dan ､ ｩ ｾ ｮ d6 dU'Q'c ｮ ｧ ｯ ｾ ｩ suy dlln nbng dO vo cOng loang va dU'Q'c ｢ ｩ ｾ ｵ dien bang thang dO'n vi nao d6 (tOy y) Billt G khong phan Lrng v6'i dung dich AgN03; cac hQ'p chat C, OJ va E phan Lrng theo cac tl 1U'Q'ng khac v6'i dung djch AgN0 3; E va F phan Lrng thea tllU'Q'ng nhU' v6'i dung dich AgN03 Page 38/42 ｾ 41st INTERNATIONAL CHEMISTRY OLYMPIAD UK JULY 18-27,2009 e) Hay ､ ｾ nghi cau truc cwa cac hO'P chat tli C - G HQ va ten: s6 bao danh: VNM - 54 C E F G Werner cung la ngU'ai dau tien tach rai dU'O'c hai di;mg d5i quang cwa H HO'P chat H c6 cau truc bat di(!n va khOng chlia nguyen tu cacbon Thanh phan cwa hO'P chat H gOm coban, amoniac, clorua va oxi; d6 oxi chi ｮ ｾ ｭ mot ｬ ｯ ｾ ｩ nh6m, c6 the la mot ba nh6m sau: H2 0, HO- ｨ ｯ ｾ ｣ 2- Ion coban nam ph5i trf befit di(!n C6 the ｬ ｯ ｾ ｩ bo de dang tat ca cac ion clorua hO'P chat bang cach chuan v6'i dung djch ｢ ｾ ｣ nitrat can 22,8 cm dung dich ｢ ｾ ｣ nitrat 0,100 M de phan ling ｨ ｾ ｴ v6'i clorua 0,2872 g hO'P chat H (khOng chLia nU'ac ｫ ｾ ｴ tinh) Page 39/42 ｾ 41st INTERNATIONAL CHEMISTRY OLYMPIAD UK JULY 18-27, 2009 f) Tfnh phan tram khOi 1U'Q'ng cua ion clorua hQ'p chat H HQ va ten: s6 bao danh: VNM - S4 H ｢ ｾ ｮ axit, nhung bi thuy ｰ ｨ ｾ ｮ ｫ ｩ ｾ ｭ Ｎ £)un n6ng mot mau 0,7934 g hOOp chat H (khong chlia nuac k6t tinh) v6'i dung dich natri hidroxit dU', ｴ ｾ ｯ coban(lII) oxit va amoniac Amoniac ｴ ｾ ｯ duooc chung cat khc5i ｨ ｾ phan ling va cho hap thl,l h6t vao 50,0 cm dung dich Hel 0,500 M Ti6p thea, can dung 24,8 cm dung dieh KOH 0,005 M ('fa trung hoa 1U'Q'ng acid Hel dLf ｈ ｾ nhO wO'ng ｉ ｾ ｩ chua eoban(lII) oxit ('fU'ooe lam nguoi, r6i them vao khoang g kali iodua r6i axit h6a bang dung dieh Hel £)a ehUiin dO h6t 1U'Q'ng iot tI,I ｴ ｾ ｯ tCP phan ling tren, can 21,0 cm dung dieh natri thiosunfat 0,200 M g) Tfnh phan tram khOi 1U'Q'ng amoniae H Page 40142 ｾ 41st INTERNATIONAL CHEMISTRY OLYMPIAD UK JULY 18-27, 2009 HQ va ten: s6 bao danh: VNM - S4 h) Viet phU'O'ng trinh ｢ ｩ ｾ ｵ dien phan lrng hoa hoc giD'a coban(lIl} ox it v&i kali iodua dung djch axit i) Tfnh phan tram kh6i 1U'Q'ng cua coban H j) Xac dinh nhom chLra oxi co H Luu y viet cac tinh toan can thiet Page 41/42 Y! HQ va tim: 41st INTERNATIONAL CHEMISTRY OLYMPIAD UK JULY 18-27, 2009 56 bao danh: VNM - 54 ｮ ｧ ｨ ｩ ｾ ｭ k) Xae dinh eong thCre thl!e ella H I) Hay ､ ｾ nghi mQt eAu true eho hQ'p ･ ｨ ｾ ｴ quang ｨ ｯ ｾ ｴ H Page 42/42 ... 1U'Q'ng cua coban H j) Xac dinh nhom chLra oxi co H Luu y viet cac tinh toan can thiet Page 41/ 42 Y! HQ va tim: 41st INTERNATIONAL CHEMISTRY OLYMPIAD UK JULY 18-27, 2009 56 bao danh: VNM - 54... -2 '" -2 Page 9/42 " ｾ 41st INTERNATIONAL CHEMISTRY OLYMPIAD UK JULY 18-27,2009 HQ va ten: s6 bao danh: VNM - S4 j) Rut mOt ｢ ｩ ｾ ｵ there ｢ ｩ ｾ ｵ dian h(! sO g6e ella dO thi k) Tfnh sO Avogadro... there ｢ ｩ ｾ ｵ dian h(! sO g6e ella dO thi k) Tfnh sO Avogadro tll' eae dCr ki(!n ella dO thi Page 10/42 ｾ 41st INTERNATIONAL CHEMISTRY OLYMPIAD HQ va tim: UK JULY 18-27, 2009 s6 bao danh: VNM -