De DA GVDG cap truong Quy Hop

PHONG
GD &ET
CUM THI TAM
HgP
ri, rnr
cHeN Gv DAY
crOr cAp rnUoNc
NAvr
Hoc 2ort-zorz
lr6N rru, H6a Hgc
Thdi
gian
ldm bdi: 120
phrlt (Khdng
kO
thdi
gian giao
dA)
ThAy (CO
)
H6y hufng
d6n HS
lirm
c6c bii
tgp
sau:
CAu I:
(
1.5
di6m)
1.

Chi dugc
dung
th6m mQt thu6c thri
hdy
trinh
bdy
phucmg
ph6p
h6a
hoc
(c6
minh
hoa
bdng
phin
ung) nh?n bitit c6c
dung
dfch ttpg-riOng
U4t-trong
c6c lg m6t
nhdn
sau:
Ba(OH)2
;BaCl2;
HzSO+;
HCI;
NaCl
;
NaOH
Cffu II.

(2.s
diCm)
1.cho
h6n
hqrp
vun
cdc
kim
1o4i: Ag,
cu, Al,
Fe.
Hdy
nou
phucrng
ph6p
h6a hgc
(c6
minh
hoa
cu th€
bing
phuong
trinh
phin
rmg)
t6ch
ri6ng
biQt
c6c kim^loai
ndy.

CAuIII:(3tti6m)
_ ,
chia
4,04
gamhSn
hqp vun
ddng nh6t
gdm
2
kim
lopi
ld
zn
vdMg
thdnh
2
phdn
bang
nhau
vd ti6n
hdnh 2
thi nghi6m.
Thi
nghiOm
1:
cho
phdn
1 vdo
ctic dlrng
200

ml
dd
HCl.
sau
ph6n
img
dun
n6ng
cho
bay hoi
htit
nudc,
ta thu dugc 4,86
gamchAt
rin.
Thi
nghidm
2:
cho
phAn
2 vi,o c6c
drmg
400m1
dd HCI
(c6
cr)ng
nti.tg
dQ v6i
dd
HCI

d
thf nghiQm
1).
Sau
ph6n
ring
dun n6ng
cho
bay
hoi
htit
nu6c,
ta thu
dugc
5,57
gam
chSt
rfin.
1.
Tinh
ktrOi
luqng
mdi kim
1o4i
trong
hdn
hq'p
ban clAu.
2.
Tinhthd

tich
khi da
bay rao
thf nghiem
r
Gh6
tich
do
o Dktc).
3. Tinh
n6ng
d0 mol/lit
cria
dd HCI
dA
ding
trong
2 thi
nghiQm.
CAu
IV
:( 3
di6m)
Hdn
hqp
A
gdm
cScl<himetan,
etylen
vd

axetylen.
Ngudi
ta
ti6n
hdnh
cdcthi
nghiQm
sau:
TNl:
DAn
2,8
lft
h5n hqp
A
(do
d
dktc)
qua
binh
dung
drng
dich
nu6c
Brom
th6y
binh
bi nhgt
mdu
di mQt
ph-An

vd c6 20g
biom
dA
phan
rin!.
a
TN2:
oOt chay
hoin
toan 5,6 lit
A
(do
o
clktc)
rdi
cho-todn
bQ
s6n
phAm
chiry
qua
binh
clWrg
175,2 gam
dung
dich
NaOH20%
sau
thf nghiOm
thu

cluqc
dung
dfcir
chria
I,57yo
NaOH.
Tfnh
Yotheo
th6
tich
cua
m5i khi
c6
trong
hdn
hqp
A ./.
I3: T:1_O=tU,
Zn-65,M9=24,Na=23,
C=I2,CI=35.5,
S
=32,
Br
=
80
).
;;;;;.1"**
pHoNG
GD
&DT

xY rnr
cHeN GV DAy
cr6r cAp rnUoNc
cUM THr rAM HqP NAvr Hoc 2orr-20r2
oAp AN
vA srEu
DIEM
Cdu
NOi
dune
Di€m
I.1
Hoc sinh
ldp
duoc
so dd nhan bidt
vd sau d6 nOu duoc
cdcbu6c
co bin sau
Trich
m6u thrl
vh
dine
qui
tim
ph0n
biOt duoc thanh
3
nh6m
Nh6m

lhm
qui
tfm
ho6 xanh
lh NaOH
vd
Ba(OH)"
(Nl)
0,25
Nh6m ldm
qui
tfm ho6 d6 le HCI
vi
H,SO"
(N2)
Nh6m
khOns lhm
qui
tim thav d6i mdu ld NaCl vd
Ba Cl"
(N3)
Ding 2 chdt
A
Nl)
ldn
luot
cho t6c duns vdi2
chdt trone
(N2)
ChAt

nho trons
nh6m 1 tao kdt tfia mdu trFr;rs, vdi
chAt &
N2)
ld Ba(OH)"
0,25
Chdt cbn
lai li NaOH
Chdt duoc
Ba(OH), tao
kdt ttra mdu
tr6np,ld
H.,SO, chat
cdn lai
ld HCI
0.25
Dtne
H,SO, vila
mdi nhAn ra cho t6c duns
vdi2
chAt trone
(N3)
0,25
ChAt tao k€t tira
mdu tr6ng vdi
H,SO,
ld Ba
Cl, chAt cbn
lai ld
NaCl.

Phuong
trinh ho6
hoc
Ba(OH), +
H,SO,
-)
BaSO,
+
2H"O
0,25
Ba(OH), +
HrSOo
+ BaSOo
+
2lIrO
0,25
Luu
y
trudc
m6i
thi
nghiOm
phai
trich m6u thrl
tr
Hda
tan h6n
hqtp trong
dd NaOH chi c6 Al tan,
loc chAt

khdng
tan,
dtng dd
nudc
loc dd
t6ch nhOm
0,25
2Al +
2
NaOH
+2HrO
-)
Na AlOr. +
CO, +
2HrO
+
2Na
AlOr,oo, +
3H,
A1(OH).,.,
+
NaHCO.
0,5
2AI(OH)3
'o-)
Al2O3
+
3HrO
2Al
P3

DiQnPhan
n6ng chaY
t 4AL
+
3.,,
Ti€p tuc
cho chdt
rilntan
trong dd HCI chi
c6 Fe
loc chdt
kh6ng
tan
thu
duoc
h6n
lrqp
Ag vd
Cu. DDng
dd
nudc loc dd t6ch
Fe
0,25
Fe +
2HCl
+ FeClr+
H,
FeCl. +2NaQH+
Fe(OH),
+2NaCl

0,5
Fe(OH),
chdn kh6ng
FeO +
CO
'o-)
to
-)
FeO +
HrO
Fe
+CO,
Ddt
n6ng
h6n hqtp
trong
oxi sau d6
hod tan h6n
hgp
trong
dd
HCI cbn
lai
ch6t
khOng t4n
lh Ag. Ding
dd
nudc loc dd t6ch
Cu
0,25

2Cu +
O,
to-)
2CuO
0,75.
CuO +
zHA,
-+
CuCl, +
H"O
CuClr+
2NaOH
+
Cu(OH)2 +
2NaCl
A(QH),
,o
_)
CuO
+
H"O
Zn
+2HCl
+ FeCl,* H,
(1) 0,25
Mg
+
zHC'
+ MgClr* H,
(2)

Theo
(1)
vd
(2)
ctl 2 mol HCI tham
gia phin
trng thi
ch{t r6n thu dugc
khi cO can
duns
dich tlne 7L
s,am
0,25
Theo bii
ra kh6i tuong
chat r5n ting
4,86
-2,02
=2,84
sam
0,25
J
trucr
dd tham
gia
ph6n
fng trong thf nghiOm
(1)
le
4#=

0,08 mol
X6t
thi nghiOm
(2),
ndu HCI
phin
ttng
hdt thi theo
kdt
quA
thf
nghiem(l)khdi
luong
chdt
rin sd tdng
gdp
doi so
vdi
thf nghiOm(l)
tric
ld chdt
r6n sau
khi c0 can
dd sE
ld,
: 2,02 +
2,84x2
='1,'7
gam
l6n

hon khdi luong dd
bei cho
ld
5,57
gam.
Do vAy
trong
thf nghiOm
(2)
HCI
phin
rlng chua hdt c6
nstria
ld kim
loai dd
bi hod tan
hdt
0,5
GQi x
,y
(mol)
ldn lugt
ld sd mol cfia ZryME trons
2,02
samh6n
hop
0,25
Ta c6
phuong
trinh

65x
+
24
y
-2,92
Theo
(I)
n
r.^.,r=
fl7,
=
x mol
0,25
Theo
(2)
tt
".,r=
1
Mo
-
y
mol
Ta
c6
phuong
trinh
136
x
+
95y

=
5,57
Ta
c6 h€
phuong
trinh
165x
+
24
y
=2,02
Gi6i ra ta du-o.
c
f
x
=
0,02
mol
Ll36
x
+
95y
=5,57
Ly =0,03
mol
0,5
mzn=
0,02
x 65x2
-

2,6
(g)
0,25
ffi
Mn=
0,03
x24x2
-
t,44
(g)
Theo
(1)
vh
(2)
cf
2
mol HCI tham
gia phin
ring
thi
ei6i
ph6nF,22,4lir
khf
Theo
tinh
to6n
d tI94
4ncr
=
0,08 J rHz=

0,04
-)
V"r=
0,04 x22,4
-
8,96lit
0,25
cr'q=
H=
0,4
M
0,25
N
Ggi x,
y,
zldnluqt
ld
c6c s6 mol
cria CH4,
CzHqua
C
2.8
Ilhh:
ffi:0,125
(mol)
-)
x
*
y
+

z:0,125 (I)
0,5
Khi
cho
2,8lithh
A di
qua
binh dlrng nudc
Brom
chi
c6
CzHqvirC2H2phan
rmg
Phucrng
trinh
phan
img:
CzHq
+
Brz
->
C2HaBr2
(1)
CzHz*
2Brz
->
C2H2Br
(2)
Theo
(l)

(2)
vd bdi
rcTac6:
nBr2
=
y
+
2t=
,20^:0,125
(mol)
-
160
K6t
ha,p
v6i
(I)
-)
x:
z
0,5
ot5t chay 5,6lith6n
hqp
cll4
+
2oz
->
co2
+
2H2o
(3)

2x
2x
czH+
+
3Oz->
2CO2+
2H2O
(4)
2v
4v
2Czkba oz
->
4 coz+
2 H2o
(5)
2z
4z
Theo
(3) (4) (5)
Ta
c6:
n
COz:2x+
4y
+
4z
:
0,375
+
y

(
vi :2x
+
4y
+
4z:62*
4y
=
3(y
+
2z)+y:0,125
*
3
+ y
)
0,5
Theo bdi ra:
n NaOH
:
0,876
mol
COr
+
2NaOH
->
Na2CO3
+
H2O
(6)
Theo

(6)
n NaOH
phin
img
:
2n COz: 0,75
-r
2y
n NaOH du
:
0,
876
-
0,75
-
2y
:0,126
-
2y
0,5
Ta
c6 hQ
phuong
trinh
x+y+z=0,125
y +22
=
0,125
40.(0,126
-2y)

(0,375
+
y).44
+175,2
.100
=
1,57
0,5
Giei
hQ
ta dugc:
y:0,025
x: z:0, 05
Yo CH4:40o/o
o/o
Czfu:20o/o
Yo CzHz
:
40Yo
0,5
GV hufns din HS
llrm c6ch
kh6c mir
drins vffn cho tli6m
t6i da.