BQ GIAO
DUC VA DAO TAO
t
DAIHQCHUE
Aeq6
Hp vd ftn th{ sinh:
n/, ,
So bdo
danh:.....
ri rnr rwBN srNH sAU DAr nec uAivr
2012
(Dqt
t)
M6n thi: Co s&
lf thuy6t h,ia hgc vir c6u t4o ch6t
(ddnh
cho: Cao hgc)
Thdi
gian ldm bdi: lB0 philt
CAU 1 Cho c6c
phan
img sau, xdy ra d 25oC:
2H2S(r)
+ Fe(r) : FeS2(r)
+ 2H2&) LLl2ss:-137,9*t^tt'
H2S(r) + =Oz&) = HrO(D + SO2(it) LHz*:-562,0k1/mol;
el6t nirigt tao thdnh ti6u chu6n
cria SO2(l) vn HzO(| Hn tuqt beng
-296,81
kl/mot vit,
-285,83
kl/mol.Hdy tinhnhiCt t4o thdnh ti6u chu6n cria HzS(,t) vd FeSz(r).
Ciu2.
I) So sdnh nhiQt.dQ
s6i cua dung m6i nguy6n chAt
vd
dung
dich chrta ch6t tan
kh6ng bay hoi, kh6ng
tliQn ly 6 cimg 6p
su6t ngoai.
2) M6.t dung dich nu6c chua ch6t tan khdng
bay hoi k6t
tinh d 271,5K. X6c dlnh nhiQt dQ s6i
cua dung
dich bi6t hdng s6 nghiQm lantr
vd hZng s6 nghiQm s6i cria nu6c 16n luqt ld 1,86 vd 0,513.
Ciu 3.
HzOz
sO d6ng vai trd ld ch6t oxi ho6
hay ch6t khu v<ri citc c{p sau ddy o diAu
kien tiOu chuAn:
^'
_ fe-
go
: 0,69
v
qo
: 7,77 v
qo: 0,535
V,
eo
: 2ro v,
qo:0,771V.
,625oc,hangs5t5cdQcriaphanimg:f
+ CIO-
-* IO-
+ Cf h0,0606mofl.l.s{.N€undngdQ
ban dAu cria cric chdt
phan img <l€u bdng 3,5.10- M, sau
300 gi6y n6ng tlQ cta ciic chdt d6 cdn l4i bao
nhi€u?
Ciu 4.c ho'nu#u*"
HIY
"
;:":u";13;
"'
HzOz
+ 2H-+ 2e - 2HzO
1) Iz + 2e : 2I-
2) SzOs2-
+ 2e _ 2SOo,2-
3) Fe3* + e
Ciu 5.
. Trong quang
ph6 ptllt xa nguyGn tu hiclro, khi chua chri
j dtin spin diQn trl, rmg vdi bu6c
nhiy t&
n" v€ nt ta chi thu duo. c mQt vach
ph6.
1) Tinh budc s6ng
(nm) cta brlc x4 ph6t
ra rlng voi bu6c nhiy cua ilign tu t& mrlc n" = 3 vA nt
= 2.
\,HAy giin thich sU t6ch vpch fL rinC
vo! bu6c nhdy cua tliQn tir trl mric n" = 3 vA
n1
:2 trong
quang ph6 ph6t
x4 nguy6n
tu hitho khi c6 chu
f diin spin cua <liQn tr?.
Cho h[ng sd Rydberg: 109678
crr'.
Ciu 6.Hfly cho
bitit dang
hinh hgc, tr4ng
thrii lai ho6
cria
nguy6n tr? trung tdm vd so siinh
g6c
li6n kilt cua
c6c
phAn
tu trong m6i day sau:
1) PH:,
PCI: vd
PF:.
2) OFz, OClz vd SFz.
CAq 7.l) HAy
giai thich t4i sao
phric chtit [Co(NH3)6]3*
nghich
tt trong
khi phfc chdt
1Cof4] thuan
tuZ
2) T4i sao
cdc
phric ch6t cua Zn" thudng kh6ng mdu?
Cho <ti€n tich hat nhdn cua
Co
: 27
, Zn: 30.
Ghi chr[:Cdn b0 coi thi kh6ng
gidi thich
gi thAm.
