Đề thi HSG Hóa học lớp 12 Thái Nguyên 2013-2014 vòng 1 - Học Toàn Tập

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UBND

riNn rnAI

NcuvtN

so

crAo

DUC vA

EAo

r4o

of

cuixu

rnfc

C6u 1: ( 3,0 di6m

)

_.

t.

Co 6 lq h6a ctr6t Ui m6t nhf,n, m5i t9 tlgng mQt dung _dchmui5i

nitat

cira mQt,kim lopi:
.

Ba(NO3)2, Al(NO3)r, Pb(N9e)2,

Zn(NOr),

AgN93, Cd(NO3)2. Chi dusc dung 3 h6a chdt

hm

thu6;

tht,

h5,

"nan'Uitit tung dung dich mutii. Tdnh bdy c6ch tiiSn

hinh

thi nghiQm

clO

nhAn bitit m6i dung dich muiSi ilpng trong m5i tq vd vii5t phucrng trinh h6a hgc xiry ra

(dang phucrng trinh ion).

2. Cho so dd c6c phucmg

fiinh

h6a hgc:

(1) (x)

+

HCI

-+ (Xr)

+

(x2)

+

Hro

(s)

(x,

+

Ba(oH)z

+

(&)

(2)

(Xr)

+NaOH

_-+

J(&)

+

(&)

(6)

(Xr)+NaOH

+

.ffi,)

+ (Xe)

+

...

(3)

(xr) +

Cl2

-+

(x5) (7)

(xr)

+

HCI

-+

(x2)

+...

Ki

THr cHeN

Hgc

sINH

GIoI

riNu

LGP t2 NAtvl HQC 2013-20L4

wt0x

rHI:

HoA HQC (YoNG

I

₎

(ThN gian ldm bdi 180

phil

kh1ng *a

*Ai

gian giao di)

(4)

(X3)

+

H2O

+

Oz

-+

It}(6l

(8)(Xs)+

(xs)tHzo

-+

(X+)+...

Hoan thAnh c6c phucrng trinh h6a hgc vd cho biOt cdc ch6t

X,

Xr,...,

Xg.

Cffu 2: ( 4,0 tli6m.)

t-

Cfro g nguy0n t6

A,

_&

X

(Zn%y%d

d0u & nh6m

A

vd kh6ng

ctng

chu

ki

trong b6ng
tu6n hodn. TOng sO luqng tu chinh cria electron cuiSi cirng ctra 3 _{rguy6n"ti,

A,.&

X

(ki hiQu

Hn tuqt

li:

na,

nn

nx) bdoe 6; tdng s5 lugng trl phg cira chring ba"S

2;t6ngsii

luqng

tt

tir

berg -2 virt6ng sii lugng

tu

spin berrg

_-L/2trangtl6

s0 lugng

tir

spin ctra ea LiL+112.
a. X6c ttinh A,

_&

X.

Cho bi6t deng hinh hgc ctra phdn tr? AzR vd A2X. So s6nh g6c h6a

tri

trong

2phtntu

d6 vd gi6i thfch.

b. D6i v&i phdn tu

_&XR:

vi

ion )G42-, hdy vi6t cOng thrlc ki6u Lewis, cho bi6t dang

hinh hgc

_vi

kang th6i lai h6a cira nguydn trl trung t6m.

2.HW

ch6t vO co

X

thenh phAn c6 2 nguyCn t5,

c6

120 q Mx

<

145. Cho

X

phan img

vdi

Oz thu dugc ch6t duy nfr6t

y.

Cho

Y

phan rlng

vdi

HzO thu dugc

2

axrt vO co

A

vi

B.

A

phin

img

vdi

dung dich

AgNO:

thu dugc ki5t tua

t

itne C, k6t tua ndy tan trong dung dlch
NH3.

B

phan rmg

vdi

dung dlch NaOH du thu du-ry. c

mulii D.

D

phan ring

vdi

dung dich

AgNO3 thu dugc k6t tua vang B. Ch6t

X

khi ph6n ting

vdi

HzO thu dugc

2

axitld

G

vi

A,

khi dun n6ng G thu dugc axit B vd khi H.

X6c dlnh c6ng thrlc phdn

tu

cric chilt A,B,C,D,X,Y,G,H vd viSt c6c phuong trinh h6a hgc
xiry ra.

C6u 3: ( 3,0 di6m

₎

1. Hidrocacbon

A

c6

CTPT

le CeHrg.

A

c6

khi

nhng t6c dpng

vdi

Br2 khan, xric t5c b$t

Fe, t0. Cho A

tfc

dpng

vdi

Hz, xric tdc Ni, t0 thu dugc B c6 CTPT ld CgHrz. Oxi ho6 B

bing

O2 trong HzSO+ thu dugc axeton. X6c dinh CTCT vd gqi t6n

A,

g.

Vi6t

c6c

PTItrI

xhy ra.
Trinh

biy

cs ch6 phan tmg kAi B t6c d3rg vdi Br2 khan, xric t6c b$t Fe, t0.

2.Yi6tc6c PTttr{

thuc hi$n d6y chuyEn h6a sau:

Etilen ---+

(A)

cno'P , qg ₎

-#

(C)

_--4.+

(D)

-s--,

(q)

_-r4'-+

_G)

_-93-+

_tCl

19*-**J

l-4-r1Hl

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Cffu4:(5,0tli6m)

1*.

Ti"h

pH ctra

d""e

dich

A

g6m KCN 0,120M; NH4CI 0,150M vd

KOH

0,155M.

b.

Tinh-th6

tich

dung dicfr

ftCt

0,210M cAn cho vdo 50,00

ml

dung dich

A

cltl

pH

cua

h6n hqrp thu duo. c ba"g 9,24.

Cho bi6t Ku

cta

HCN

li

10'e'35; ctra

NHf

le

10'e'24.

,

,

2. Cho 37,2 gam h6n hqrp

X

giim: R, FeO,

CuO

(R

h

kim

lo4i chi

c6 h6a

tri II,

hidroxit

ctra R ktrdng co

tinh

ludng

tinh)

vdo 500 gam dung dich

HCI

14,6 ya

(HCl

dune du), sau

phan rmg thu dugc dung dich

A,

ch6t ren B n{ng 9,6 gam (chi chria mQt

kim

lopi) vb.6,72

litH.z(dktc).Cho

dung

dichA

t6c.dpng

vdi

dung dich

KOH

du, thu dugc,ket,tta D. Nung

k}t

tda D trong kh6ng kh( d6n kh6i luqng kh6ng d6i thu dugc

34

gam ch6t rdn E g6m hai
oxit.

a. Tim R

vi

% kh6i lugng cria mdi ch,it trong h6n hgp

X

.

b. Tfnh ndng d0 phen tr6m cria c6c ch6t trong dung dich A.
Cflu 5: ( 5.0 tliiim

)

ffi;

frerp

xe6r{

hai ch6t

A,B

le <l6ng phen ctra nhau chrla

C,}r,o,

m5i ch6t chi chria mQt

nh6m

chrii,

d5u c6 phan ring vdi NaOH theo

ti

lQ mol

li

1:1.

L6y

12,9 garnh6n hqrp

X

cho
t6c dpng virra dtr vO{ZS

ml

dung dich NaOH 2M thu dugc h5n hqp Y.

a.Xic

di{r

cOng thric ph6n

tu

cua A,B.

b.

Chia f,An

hd

Y

thanh 2 ph6n b6ng nhau. MQt phAn cho t6c dung frSt vOi dung dich

AgNO-3 trong

Xftr

au thu dugc

2I,6 gamh&fiVAe.

M$t

phAn dem cO c?n tl-ru dugc 6,55

gam h5n hqrp muOi khan. X6c dinh cOng thrtc c6u t4o phir hgp cria

A,B

vd tinh kh6i luqng
mdi ch6t

ffong

L2,9 ganhSn hqp

X.

2. Thiry phAn ktrOng

holn

toan peptit

A,

c6 phan

fii

kh6i liL293 dvC vd chrla 14,3%

N

(theo t<tr6i tuo-ng) thu du-o. c 2 peptit B vd C. M6u chria A,472 gam peptit B khi dun n6ng,

pna" img hoan

to*

u6i

18

mi

durrg dich HCl 0,222 M. MAu chria 0,66.6 gam peptit C

khi

dun nOng,

phin

img hoan toan vOi 1

4J

nildung dlch NaOH l,6Ya (kh0i lugng ri0ng ctia

dung dich NaOH ld 1,022 g/ml).

Xic

dinh CTCT ctra peptit

A.

(Cho:

H=1; C

:12;

N=14; O=16; Na=Zi; Be=9; Mg=24;

Al:27;

P=31;

S-32;

Cl=35,5; K=39; Fe=56; Cu=64; Br=80; Ag=108J

(

Gidm'

;,;;

;;,;;

;,;II;

;

;|

;;;:: r

t h o m)

Hg vd t6n thi sinh:

2

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