^H IS'''' U NGHIEN CUU & UNG DUNG ^3 II XAY DyNG VA SU* DUNG BAI TAP PHAN HOA HEU VAH b£ P H A H A N C O L V A PHEHOL HdA HOC L0P11 • ThS Trang Quang Vinh Trudng Dgi hpc An Giang SUMMARY Teaching assignm[.]
Trang 1^ H IS'-U
NGHIEN CUU & UNG DUNG
^3
II
XAY DyNG VA SU* DUNG BAI TAP PHAN HOA
-HEU VAH b£ P H A H A N C O L V A PHEHOL HdA HOC L0P11
•
ThS Trang Quang Vinh
Trudng Dgi hpc An Giang SUMMARY
Teaching assignment-to raise issues is leamingstyle combined with two elements: assignment and raise issues to achieve the goal ofirmovative teaching methods in the current period is both ensuring one's power, closing object in education and bringing into play the positive academic, taking the form and developing detective capabilities, and solving problems in academic as well as in the lives of students
Keywords: Teaching assignment - to raise issues, alcohol phenol
Ngay nh^n bdi: 10/5/2014; Ngay duyft d&ng: 30/7/2014
De phdt triln ndng Ivic tu di^ sang tgo, tu duy
Idgic cho tftng cd nhan hpc sinh (HS) frong qud trinh
hpc tgp vd gdp phin vdo vife nang cao chit lupng, Mf u
qud dgy hpc Hod hpc d tmdng THPT, Bdi vilt nay gidi
tiiif u mpt so bdi tgp phan hod - neu vin dl phin Aneol
vd Phenol (Hod hpc ldp 11) Cdc bdi tgp phan hda
neu vin dl nay da dupe thvrc ngMfm tgi tmdng THPT
Ngi^en Dinh CMIU, Thj Xa Sa £>ec, Dong Thap
1 Co sd li lugn xay dyng bai tgp phan hda
neu van de
1.1 Ca sd ly lugn
Bai tgp phdn hod frong dgy hpc neu vin dl Id
nhftng bdi tgp hod hpe md frong qua frinh gidi, thudng
xudt Mfn tmdc HS cac cau hdi cd dfc tinh "neu vin
dl" Tuy theo myc dich dgy hpc, tinh phftc tgp vd quy
md cfta tiing logi toan hda hpc md gido vien (GV)
cd thi sft dvmg cac Mnh thftc phan hod khae nhau
Cd thi sft dvmg bai tgp hod hpc phan hod de dgy eho
HS gidi qi^lt mpt van dk hpc tgp cd lien quan den
nhftng kien thftc quan trpng hode dk vgn dyng tong
hpp nMlu kiln thftc cfta chuong frinh Hod hpc, hode
dl tgp dupt cho HS gidi qiQ^lt nhftnp vin dk thvrc
tien dupe chpn lpe gan tuong ty vdi van de hpc tgp d
tmdng nhung dd bien ddi it hay nMlu, tmh phftc tgp
dupe nang cao din
1.2 Nguyen tdc xdy d^mg
Thdng thudr^ tft mpt nfi dung cfta bdi tgp chftng
ta cd till tiiilt kl thanh ba vin dl theo ba mftc dp vdi
myc dich hudng din vifc tu duy tai lifu mdi vd cy
thi hod mftc dp kiln thftc cfta cd ldp
Mftc dp 1: c l n hudn^ HS neu ra dupe cdc tmh
chit rieng bift cfta cdc chll, cdc Mfn tupng, cdch ly
giai nhftng ngi^^en nhan dan gidn nhit, trinh bay lgi
kiln thftc CO bdn dvra vdo fri nhd
Mirc dp 2: HS bilt vgn dyng kiln thiirc vdo dilu
kifn mdi, sft dyng kiln thuc vao thyc tl Dk hodn
thanh vin dl nay HS cln cd sy phan tich so sanh dl neu ra dupe eac dilu kifn co bdn ddi vdi mft so ldp cdc chit, cdc Mfn tupng
Mftc dp 3: Ld mftc dp cao nhit frong ba mftc df, mftc dp ndy yeu d u khdng cM phan tich, so sdnh md cdn phdi khdi audt hod cdc s l lifu thu dupe, sft dvmg chiing frong dieu kifn mdi phftc tgp hon
2 Mft s l bdi tgp phdn hda - neu vin de phin Ancol va Phenol
2.L Bdi tgp 1 (Bdi tgp l^ thuyit)
* Ngi dung bdi t(yj: Cho cdc chit mpu etylic,
axit pheme, axit cacbomc, axit axetie Sdp xip theo
CMIU tdng df Imh dfng nguyen tft hidro frong nhdm
- OH Gidi tMch vd lly vi dy minh hpa
* TMit kl theo kilu phdn hod - neu vin dl
Muc dg 1: Sdp xip theo CMIU tdng dp linh dpng nguyen tft Mdro frong nhdm OH ciia cdc chit sau (cd
gidi tiuch): CflpU, C^UpU, CH3COOH
Mire dg 2: Bai toan glc
Mire dg 3: Cho cdc chit: C^HjOH, C^HjONa,
CgHjOH, CgHjONa, CH3COOH, CHjCOONa Nhftng cdp chit nao phdn ftng dupe vdi nhau? Vilt cdc phuong frinh phdn ung, gidi tiiich vd gM dilu kifn phdn ftng nlu cd
2.2 Bdi tgp 2 (Bdi t^ If thuyit- thifc nghifm)
* Ngi dung bdi tgp: Mpt hon hpp gom mpu
n-butylic, phenol (Idn^, bdng phuong phdp hod hpc hdy tach rieng tiing chat ra khdi hon hpp
* Thiit ke theo kiiu phdn hod - neu vdn di
Mirc dg 1: Bdng phuong phdp hda hpc hdy phan
bift cdc chit ldng rieng bift sau: mpu n-butylic, phenol (ldng)?
Mirc dg 2: Bai todn goc
Muc dg 3: H5n hpp A gom mpu n-butylic,
phenol (ldng) vd amlin Trinh bdy phuong phdp dl tach rieng tiing chit ra khdi hon hpp
A-TAP CHf T H I ^ BI GlAO DMC - Sd 1 0 8 - 8 / 2 0 1 4 • 41
Trang 2II NGHIEN CUU & UNG DUNG
2.3 Bdi t$p 3 (Bdi tgp tdng hgp) ^
* Ngi dung bdi tgp: Cho 11 gam hon hpp hai
mpu no don chftc kl tilp nhau frong ddy dong ddng
tdc dyng hit vdi nafri thu dupe 3,36 lit kM H^ d
(dktc) Vilt cdng thftc clu tgo cua hai rupu frgn
* Thiit ke theo kiiu phdn hod - niu vdn di
Muc dd 1: Hon hpp A gom hai mpu metylic vd
etylic Cho 12,4 gam A tdc dyng hit vdi nafri thu
dupe 3,36 lit H2(dktc) tinh khoi lupng mSi mpu
trong hon hpp A
Mirc dg 2: Bdi todn goc ^
Mite dg 3: Dit chdy hodn todn a pam hon hpp
hai mpu tiiupc eftng mft ddy dong ddng thu dupe
70,4 gam CO2 vd 39,6 gam HO
a Xdc dinh cdng thftc cau tgo cfta hai mpu vd
khoi lupng moi mpu trong hon hpp Bilt ty khoi hoi
ciia moi rupu so vdi oxi deu nhd hon 2
b Cho a gam hon hpp hai mpu trgn tdc dvmg vdi
Na du Tinh till tich Hj thu dupe d dktc
3 Tien trinh thyc nghifm su phgm
Chftng tdi chpn Trudng THPT Nguyin Dinh
Chilu, Thi Xd Sa Dec, Tinh Ding Thdp dl tiln hdnh
dgy phin Ancol vd Phenol vdo hpc ky II cfta ndm hpc
2012-2013.0 ldp dii chftng (DC) la 1 lAl (35 HS),
GV sft dyng gido dn binh thudng, ldp thyc nghifm
(Tl^ Id 11A2 (33 HS) GV tiiilt ke gido dn cd sft dyng
bdi tf p phdn hda - ngu vin dl Cd hai ldp diu hpc
chuang trinh Hda hpc 11 vd khdng phdi la ldp chpn,
ciing mft GV dgy
Chftng tdi cho HS ldm 1 bdi kilm fra 45 phut (ty
lufn) d hai ldp (dl bdi kiln fra nhu nhau, ciing dap dn
vd eftng GV chim) dk ddnh gid Mf u qud vife sft dyng
bdi tfp phan hda - nfu vin dl Kit qua thyc nghifm
su phgm dupe trinh bay frong cdc bdng dudi day:
Bdng 1 Bdng phdn phdi tdn sd, tdn sudt vd tdn sudt
liiy tich (Ldp llAlvdllA2)
Bdng 2 Tdng hgp phdn logi kit qud hgc tgp cua HS
Dii tupng
TN E)C
Sd%HS Ylu, kgm
(0-4) 3.03 14.29
Trung binh (5-7) 57.58 60.00
Khd, gidi (8-10) 39.39 25.71
Hinh 1 Dd thi dudng liiy tich
70.00
• TN
• OC
Dilm
0
1
2
3
4
5
6
7
8
9
10
S
So HS dgt
diem Xi
DC
0
0
0
1
4
8
7
6
5
3
1
35
TN
0
0
0
0
1
4
7
8
6
4
3
33
% HS dgt dilm Xi
DC 0.00 0.00 0.00 2.86 11.43 22.86 20.00 17.14 14.29 8.57 2.86 100.00
TN 0.00 0.00 0.00 0.00 3.03 12.12 21.21 24.24 18.18 12.12 9.09 100.00
%HS dgt diem
Xi trd xuong
DC 0.00 0.00
0.00 2.86 14.29 37.14 57.14 74.29 88.57 97.14 100.00
TN 0.00 0.00 0.00 0.00 3.03 15.15 36.36 60.61 78.79 90.91 100.00
Hinh 2 Biiu ddphdn logi kit qua hge tgp eua HS
Phdn tich kit qud thyc nghifm:
Kit qud TN cho tiily, chit lupng hpc tf p cfta HS cdc ldp TN cao hon ldp DC, thi hifn:
Dilm tinng bmh cfta HS cdc nhdm TN ludn cao hon nhdm DC Ty If % HS dgt dilm khd gidi d nhdm
TN ludn cao hon nhdm DC vd ti If % HS cd dilm ylu kem d nhdm DC cao hon nhdm TN D I tiii dudng luy tich cua HS nhdm TN ludn ndm ben phdi va pMa dudi dudng luy tich efta nhdm DC, dilu dd chftng td chat lupng hpc tgp cua HS nhdm TN cao hon HS nhdm DC Nhu vf y bai tgp phdn hda - neu vin dl ddm bdo tinh ehinh xae, tinh khoa hpc, phft hpp vdi dii tirpng
HS, nang cao dupe khd ndng tilp thu vd vgn dyng kiln tiiftc, khd ndng ldm vifc df c lgp, tich cyc vd phdt friln tir duy sdng tgo cua HS Kit qud thyc nghifm cho tiily d ldp TN cd xu hudng tot hon ldp DC, dieu
do cho phep budc diu khdng dinh tinh hifu qud cfta vifc sft dyng bai tgp phdn hda - neu vin dl trong dgy hpc Nhu vgy, cdc kit qua tiiu dupe cdn bdn dd xdc nhgn gia thuyet ciia de tdi
4^ • TAP CHf THI^BIGlAO DMC-sd 108-8/2014
Trang 3NGHIEN CUU & UNG DUNG II
4 Ket lugn
Vdi vife xay dvmg cac bdi tgp phan hda - neu
vin dk phin Ancol vd Phenol Hod hpc ldp 11, tinh
phftc tgp lien tyc ciia cdc vin dl trong cdc bdi tgp dd
tgo digu kifn eho HS d nhdm thft nhit tilp xfte nMlu
vdi cac bdi tgp co bdn, HS nhdm thft hai vd nhdm
thft ba Mnh thdnh ky ndng dn tgp tdi lifu qua cdc vin
dl thft nhit vd phat friln hogt dpng tu duy tich eye
kM trd ldi cdc van dl phftc tgp hon Nhung bai tgp
nhu till da nang cao Mf u qud dgy hpc Hda hpe theo
hudng vfta phft hpp vdi ddi tupng nhgn tiiftc, vfta
phat huy ndng lyc gidi qi^et vin dl trong hpe tfp cfta
HS Kit qud thyc ngMfm su phgm budc diu ^ dgt
dupe frong vifc phdt huy tinh tich eye, ndng lyc sang
tgo, sy hftng thft cho HS frong hpc tgp mdn Hda hpc
Tdi lifu tham khao
1 Le Vdn Ndm (2004) Siir dyng dgy hgc phdn
hod trong dgy hge neu vdn di bg mdn Hod hgc Tgp
cM Gido dvic, so 101
2 Le Vdn Ndm (2005) Xdy dyng cdc bdi tgp
hod hgc theo hudng phdn hod - niu vdn di Tgp cM
Gido dye, sd 123
3 Le Vdn Ndm, Trang Quang Vmh (2012) Xdy
w w \ \
dyng hf thdng bai tgp phdn hod - niu vdn di phdn hidrocacbon vd ddn xudt halogen Tgp cM Hod hpc
vd Ung dyng, sd 4, fr.44-47
4 Nguyen TM Sftu, Le Vdn Ndm (2009)
Phuang phdp dgy hge Hda hge 2 NXB Khoa hpc vd
KI tiiugt Ha NpL
IIIIIIIIIIUIIIIIIIIIMIUIIIIIIHIUIIIiniMMIIMnMiniUIMIIMiniUniHIMIIillllMnilHniHUIMHIIIIIIIIIUIIMIIIIIMIIIIIMHIIIIIIIHHHIIMIIMIIHIiniliniHIIIIUIHIIIMIIII^
sd dd cd till gdp y, dilu chinh sau dd dua ra phuong
hudng hogt dfng rieng cho don vi
D I nang cao chit lupng ^ang dgy ciia cdc trudng
ndi chung, cdc trudng dao tgo vdn hda nghf tiiugt ndi
rieng, chftng ta cln diy mgnh cdng tac KT-DG Ti^
nMen, dl lam tot cdng vifc tren mpt each Mfu qua, cdng
tac nay phai dam bao tinh chinh xdc, khach quan, k{p
thdi vd cdng khai KM kilm tra nhd trudng phdi thdng
bdo rd npi dung kilm tra va cM ra nhftng mdt dupe hode
chua dupe dl kip thdi dilu chinh nhftng tMlu sdt, bilu
duong nhan rpng nhftng nhdn td tich cyc Tren eo sd dd
nha trudng neu ra cac giai phap, cy till:
Gidi phdp 1: Doi vdi GV chuyen nganh cln:
-Kilm fra gido dn gidng dgy, tiln dp thvrc Mfn npi
dung, chuong trinh gidng dgy; Tham quan, dy gid
theo fruih ty tft td den khoa chiQ^en mdn; - Kilm tra
lich smh hogt to chuyen mdn, tgp huan theo tiing
chi^en dk', - Theo ddi cdng tac chft nMf m ldp (gM
nhgt ky ldp, vao dilm so hpc bg); Kilm tra vifc
tham gia cdng tdc ngMen cuu khoa hpc cfta GV, thvrc
Mfn nfi qi^, c^ chi hogt dfng cua nha tmdng
Gidiph^ 2: Sau kM kilm tra, nha tmdng phdi cd
danh gid bdng vdn ban vl mftc dp hoan tiianh va chua
hoan tiianh cfta GV dl kip thdi ddn die, thftc diy ^ i
tupng kilm tra triln khai cdng vifc cho dung tien dp
Vifc ddnh gid cd cMnh xdc hay khdng d n dya tren tieu
cM cy thi vl: - Dgo dfte nghi ngMf p; - Triln khai thyc
Mfn kl hogch gidng dgy; - Chit lupng ^ d dgy; - Cong
tac chft nMf m ldp; - Chip hanh qi^ che hogt dpng efta
nha trudng; - C^i% tac ngMen eftu khoa hpc vd cdc
hogt dfng khae do nha trudng to chute,
4 Ket lugn Thdng qua kilm tra, nhd tmdng sd danh gid dupe thyc trgng hogt dfng dgy hpc cua GV, giftp
hf thing qudn ly nhd tmdng ddnh gid xip logi frinh
df cfta hp dupe chinh xdc hon Qua dd, ndng cao nhgn thftc vl cdng tac kilm tra cho can bp, G V trong tmdng vl tinh than trdeh nMfm, thvrc Mfn tot nMfm
vy dupe giao, gdp phin tich cyc vdo cdng tdc ty kilm tra cua cdc don vi
Nhu vgy, cd thi khdng dinh, cdng tdc KT-DG nlu dupe triln khai mpt each ngMem tue, dong bp
se cd tac dpng trvrc tiep den qua trinh nang cao chdt lupng dgy hpc, dong thdi, tdc dpng tich eye frong vifc xay dvmg vd du/ fri nl nip ky cuong, gdp phin quan trpng thftc diy sy phdt frien cua nhd tmdng ngay cang vftng mgnh
Tai lifu tham khao
1 Quang Anh - Ha Ddng (2003) Nhitng diiu
cdn biit ve hogt dgng thanh tra kiim tra gido dye vd ddo tgo NXB CMnh tri Quoc gia, Hd Npi
2 Nguyen Dire CMnh (2008), Ddnh gid chdt
Itrgng trong gido dye, khoa hgc suphgm NXB Dgi
hpe Quoc gia Ha Npi
3 Nguyen Xuan Thanh (2009) Kiim tra vd
thanh tra gido dye NXB Dgi hpe Su phgm Ha Npi
4 Nguyen Vdn Kim - Vu Vdn CMen - Phgm Thu
Hiln Vdn Tiln Mai (2001) Td chire vd hogt dgng
thanh trg kiim tra, gidm sdt ciia mgt sd nude trin thi gidi NXB CMnh fri Quoc gia, Hd Nfi
TAP CHI THI^ BI GIAO DMC - Sd 108 - 8/2014 • 43