- LUYEN TAP : TOC DO PHAN UNG VAC AN BANG HOAHOC
7.26. a) Tang dp sudt (tfte la tdng ndng do cac chd't phan ftng).
b) Tang nhiet dọ
c) Dung chd't xuc tdc (thf du platin).
7.27. Khi NH3 tao ra lai bi phdn buy thanh N2 va H2 nen chi thu dugc mdt lugng nhd NH3.
Khi cd mat H2SO4 thi NH3 tac dung vdi H2SO4 tao thanh mudi:
NH3 + H2SO4 > NH4HSO4 2NH3 + H2SO4 > (NH4)2S04
Do vdy cdn bdng chuyin dich vl phfa tao thanh NH3 va phan ftng cd thi dugc thgc hien hoan toan.
7.28. C.
7.29. Ddi eac ndng đ phdn tram sang ndng do mol// : cdc dung dich Na2S203 da dung cd nong do la 0,01M ; 0,02M ; 0,04M ; 0,05M va 0,1M.
Thdi gian phan ftng cua cac dung dich ldn lugt la 5ph ; 2ph30s ; lphl5s ; Iph va 30s.
7.30*. De tao ra 0,6 mol isopropyl axetat cdn tieu hao 0,6 mol axit axetic, 0,6 mol
ancol isopropylic. Lugng nudc tao ra cung la 0,6 mol. Khi cdn bdng ldn thft nhd't dugc thiet lap, ndng do mol cdc chd't trong hdn hgp nhu sau:
[CH3COOC3H7] = ^ (mol//) ; [H2O] = ^ (mol//) ;
[CH3COOH] = ^ (mol//) ; [C3H7OH] = ^ (mol//). (V la thi tich cua hdn hgp phan ftng)
Hdng sd cdn bdng :
[CH3COOC3H7].[H20] ^ 036 ^ 2 25 [CH3COOH].[C3H70H] 0,16
Khi them 1 mol axit axetic vao hdn hgp dang cdn bdng thi can bdng se chuyin dich.
CH3COOH + C3H70H ^ CH3COOC3H7 + H20 Luc bdt đu thdm axit 1,4 mol 0,4 mol 0,6 mol 0,6 mol Bién đi - x mol - x mol +x mol +x mol Luc cd cdn bdng mdi (l,4-x)mol (0,4-x)mol (0,6+x)mol (0,6+x)mol
Khi cdn bdng dugc thidt ldp lai, ndng đ mol cac chdt nhu sau :
[CH3COOC3H7] = ^ ^ ; [H2O] = M ± i L ;
[CH3COOH] = ^ ^ ^ ; [C3H7OH] = ^^^p-
(V la thi tich cfta hdn hgp phan ting luc đ).
Hdng sd cdn bdng eua phan ftng vdn la 2,25 ndn ta cd :
(0,6+ x) ^ 2 2^ ^ l,25x^-5,25x + 0,9 = 0. (1,4 - x).(0,4 - X)
Phuang trinh nay cd hai nghidm : Xj = 4,02 va X2 = 0,18.
Chi cd nghidm x = 0,18 la thfch hgp vi 1,4 - 4,02 < 0 la vd If. Vdy khi cdn bdng dugc thidt ldp trd lai, hdn hgp phan ftng cd :
1,4 - 0,18 = 1,22 (moi CH3COOH) ; 0 , 4 - 0 , 1 8 = 0,22 (mol C3H7OH);
MUC LUC
Trang
PHAN M O T : CAU HOI VA BAI TAP
Chi/ong 1 : NGUYEN TCT 3
Bai dn tap 3
Bai 1: Thanh phan nguyen tft 5 Bai 2 : Hat nhan nguyen tft. Nguyen td hoa hgc 6
Bai 3 : Dong vị Nguyen tft khdi va nguyen tft khdi trung binh 7 Bai 4 : SU chuyen dgng cCia electron trong nguy§n tft. Obitan nguyen tft 8
Bai 5 : Luyen tap ve : thanh phan cau tao nguyen tft. Khdi li/Ong cOa
nguyen tụ Obitan nguyen tft 9
Bai 6 : Ldp va phan Idp electron 10 Bai 7: NSng iuong cCia cac electron trong nguyen tft. Cau hinh electron
nguyen tft 11
Bai 8 : Luyen tap chUOng 1 12
Chi/Ong 2 : BANG TUAN HOAN CAC NGUYEN TO HOA HOC 14
VA DINH LUAT TUAN HOAN
Bai 9 : Bang tuan hoan cac nguyen td hoa hoc 14 Bai 10 : Su bien đi tuan hoan cau hinh electron nguyen tft cOa cac nguyen
tdhoa hgc 14
Bai 11 : Svt bien đi mot sd dai li/gng vat li cCia cac nguyen td hoa hpc 15 Bai 12 : Sg bien đi tính kim loai, tính phi kim cCia cac nguyen td hoa hgc.
Dinh luat tuan hoan 17
Bai 13 : Y nghTa cCia bang tuan hoan cac nguyen td hoa hgc 18
Sa; 74 .• Luyen tap chuong 2 18 . . / , 20
ChLfOng 3 : LIEN KET HOA HOC
Bai 16 : Khai niem ve lien ket hoa hoc. Lien ket ion 20
Sa/7 7 ; Lien ket cdng hoa trj 21
Bai 18 : SU lai hoa cac obitan nguyen tft.
Sg hinh thanh lien ket don, lien ket đi va lien ket ba 22
Bai 19 : Luyen tap ve : Lien ket ion. Lien ket cdng hoa trị Sg lai hoa cac
obitan nguyen tft 23
Bai 20 : Tinh the nguyen tft. Tinh the phan tft 24 Bai 21 : Hieu do am dien va lien ket hoa hpc 25
Bai 22 : Hoa tri va sd oxi hoa 26 Bai 23 : Lien ket kim loai 27 Bai 24 : Luyen tap chUOng 3 28
29 Chuong 4 : P H A N (SNG HOA HOC