Hoa hoc 9 vong 1

pU

rV rm

cHQN IrQC srNH GrOr cAP HUYTN - LoP

e

@t

Mdn thi: HOA HQC
(Thdi gian: 120 phrit khilng kA tudt gian giao nhQn tti)

Dr cuiNH rHU'c

ciu I (3,5 tli6m): Cho c6c chSt: cu, FeS, Fe3Oa, FeCO:. Fe(OH)] tAn lugt tac dung v6i:
a) Dung dich
b) Dung dich

HC1.
HzSO+ dic, n6ng.
Vi6t phuong trinh h6a hoc cua cg9 phAn irng xiry ra'
*5i tq dUng ri6ng Uial
Cffu
1Z,O Oi6m): Co 4 19 rnAt nhdn,

if

MgSoa, HCl,

xuou. Hay irinh bdy phuong

ph6p hou

h9.

dung dich sau: NaCl,
d6 nhan ra mdi 1o ma kh6ng

TqJ

duo-c dung th6m h6a chAt ndo kh6c'

C6u III (3,5 tli6m):
c6
l ) Tu. cac nsuy€r, iiO, ban dAu ld: NaCl, CaCO3, HzO, kh6ng khi, thiOt bi vd chit x[rc t6c
hoa
du, co the d;a; ch6 duo.'c NaHCOT' NH+NO:, CaCl2, (NH2)2CO' Viet c6c phuong trinh
hgc diOu ch5 c6c chAt do.
2) Trinh bdy phuong ph6p hoa hoc dti tacn lAy CO2 tinh khi6t tu h6n hop khi 96*, COz'
SO2, SO3 vd 02.,
cau ry (3,5 tli6m): cho 8,1 gam kim 1o4i M t6c dung v6i 4,8 gam khi oxi, d6 ph6n ung
xay rahodn toirn thu duoc chAt r6n A. Cho A viro dung dlch HCI (dung du l0%) thu dugc
dung dich B vh 3,36 lit khi tho6t ra (do o dktc).
a) X6c dlnh kim 1o4i M'
15,6
Uj Cno V mi dung dich NaOH 2M vdo dung dich B, phAn ung k6t thuc thu dugc

gamk6ttua.TinhV.

.i - __ :

,
Lau V (4,5 rli6m): Chia a gam h5n hop X g6m Cu vd Fe (o dang bdt) thanh 3 phAn bang
r

nhau:

phAn 1: Cho t6c dung v6i dung dich HzSOa lo6ng, du thu dugc 3,36litkhi H2 (do o dktc)'
pfran 2: Cho t6c dpng v6'i dung dich HzSO+ dic, n6ng, du thu dugc 6,72 lit khi SO2 duy
nhAt (do cr dktc).

phil

3: Cho t6c dung voi 500m1 dung dich AgNo3 lM. Sau khi ph6n u'ng xay ra hodn
tolrn thu dugc dung dich Y vd b gam chAtrdnZ'
a) Tinh gi6 tri cua a 13 b.
Uj Or"g dich Y c6 th6 hda tan tOi da bao nhiOu gam Cu? , . . r

.j

cno-a"ng dich
C6u VI (3,0 tli6m):

y

phan u'ng htit vcri dung dich Na2S. Tinh kh6i luo-ng kOt tua tao ra.

l) Cho c6c dpng cU vA h6a.ch6t sau: c6c thuy tinh, 6ng hirt, duong mia, axit sunfuric d[c"'

d[c.

H6y trinh bdy thi nghiQm ve tinh h6o nu6c cua axit sunfuric
]
axit
2) irong giO thUc hdnh ,r6n H6a_ h.Q.,. b*n An khi ldm thi nghi6m dd bAt cAn d0
An
sunfuric dac d6 vdo tay. Trong tinh hu6ng nay, em hdy n6u c6ch xu' ly d6 giirp ban
kh6ng bi b6ng nang.
l6; H = l)
(Cho biit: Na=23; AI=27; Fe =56; Cu: 64; Ag:108; S:32; Cl = 35,5; C=72; O =
(Gidm th! xem thi kh6ng gidi thfch gi thAm)
---

HET ---

Hg vd ftn thf sinh: .,..,.........!."....'....'....'.,.'........'...'.'."' Sa ndo dsnh: