Bitlt cdc phin irng xby rahodn todn.[r]
(1)so crAo DUC & DAo rAo eUANG rRI
rmloNc rrrPT crruvtN r,t euf pON or rnr cHgN DQI TUYEN DI/ THr
HQC SINH GrOr Lop tz ctp riNn NAna Hec z0t9-2020
M6n thi: HOA HQC
Thdi gian ldm bdi: 180 philt (DC thi g6m c6 02trang)
Cflu L: (2,25 itihm)
1 Khi C dugc diOu chti theo bQ deng hqp dC di6u chd khi C tuong ung V
cu sau ddy cAn phii c6 di6u kiQn gi? Hdy chgn c4p ch6t A, B thich i6t phucrng trinh phan ung d0 minh hoa
Dung dich B
ctrit rin n KlxiC
2.Yiltphuong trinh h6a hgc cira phin img theo so dd sau (ghi rO di0u kiQn ph6n img n6u c6)? HzSO+ ) 12 -) KI -+ HzS -+ HzSO+ -+ Brz -+ HBrO:.
3 Spc 0,02 mol Clz vdo dung dich chria 0,06 mol FeBrz thu dugc dung dich A Cho AgNO3 du viro A thu dugc m gam ki5t ttra Bitlt cdc phin irng xby rahodn todn Tim gi6 tri ctra m
CiuZz (2,0 itiAm)
1 Cho so d6 chuy6n h6a sau:
(1) A
+ dd AgNOsNHr,t0
D + H2SO4' tL E
(4)
+ dd NaOH ^ + 02 Cu, to
(2') (3) (s)
M * Cl2, as
1 : 1(mol)
*+ ddNaoH , +Hzso+,t,r, xt, t0, p polistiren t0 "uo , ?
(7) - H2o (s) (e) (10)
(6)
X6c dinh c6c hqp ch6t triru co thich hqp tucrng img v6i so dd chuy,5n h6a tr6n vd vi6t phuong trinh phin img (ghi rd diAu kiQn)
2 NOu ngin ggn c6c nguyOn tAc dO so s6nh nhiet dO s6i cua c6c hqp ch6t hiru ccv
3 Cho h6n hqp A g6m hidrocacbon X, Y,ZthuQc 3 ddy d6ng ding vd h6n hqp B gdm 02, 03 TrQn A v6i B theo ti le th6 tich Ve:Ve : 1,5 : 3,2 r6i dOt chay H6n hqp sau phin img thu dugc chi gdm CO2 vd
H2O6,oi; c6 ti lQ Vlcoz;: V6zoy : 1,3 : l,2.Bidtti khdi hcri cta B so v6i HzId19.
Ti kh5i hcri cta A so v6i Hz ld bao nhi6u? Cffu 3: (1,75 itihm)
1 Hdy vi6t phucrng trinh phan rmg vd n6u hiQn tuqng xiy ra khi: a Spc NOztir tu dtin du vdo dung dfch KOH c6 pha quj'tim. b Sgc NH: tir tri d6n du vdo dung dich Zr$Oa,
c Cho it vpn Cu vdo dung dich chria d6ng thdi KNO3 vd HCl.
d Cho dung dich AgNO3 vdo dung dich Na:POa 6ng nghiQm, cho ti6p dung dich HNO3 lodng vdo d6n du
2 Cho h6n hqp g6m a mol FeS2 vd b mol CuzS t6c dpng vira dir v6i dung dich HNO: thi thu dugc dung dich A (chi chira mu6i sunfat) vi 26,88 lit h6n hqp khi Y g6m NOz vd NO 6 di6u kiQn ti6u chu6n
(2)(kh6ng cdn sin ph6m khir ndo kh6c), ti kh6i ctra Y so v6i Hz ld 19 Cho dung dich A t6c dgng vdi Ba(OH)2 du thi thu dugc t<Ct ttra E Nung E d6n khOi luqng kh6ng COi ttri thu dugc m gam ch6t rin.
Tinh gi6 tri m Cf;u 4: (2,0 itidm)
1 Cho 4 chlrthiru co A, B, D, E dAu m4ch hd c6 cr)ng c6ng thirc ph6n ttr C:H6O Trinh bdy phucmg phap h6a hgc AO nnan Uitit + ctr6t trtu co tr6n
Z.Xdc dinh c6c ch6t vd hoin thdnh so dd chuyOn ho6 sau:
A (CoHsO+) +NaOH -+ X + Y + Z
X + HzSO+ -+ E +Na2SO4 Y+HzSO+)F+Na2SO4
H^SO 1800C
F ./ t+' > R+H]O
Cho bi6t E,Z d€ucho phan img trang guffig, R ld axit c6 c6ng thirc C:H+Oz
3 Cho 2,760 gam ch6t hiru co A (chira C, H, O vi c6 100 < Mn< 150) t6c dung v6i dung dfch NaOH vtra dir, sau d6 ldm kh6, phAn bay hoi chi c6 nu6c, phAn ch6t rin khan cdn l4i chria hai mu5i ctra natri c6 kh6i
lucr-ng 4,440 gam Nung nong2 mu6i oxi du, sau khi phin img xhy rahodn todn thu du-o c 3,180 gam
NazCOr, 2,464litCOz (cr dktc) vd 0,900 gam nu6c
X6c dfnh cdng thric phdn tu vd c6ng thric c6u tpo cria A. Cflu 5: (2,0 itiAm)
1 Cho 0,3 mol h6n hqp X g6m 2 este d<vn chric t6c dgng vira dtr v6i 200 ml dung dich NaOH 2M dun n6ng, thu dugc hqp ch6t hiiu co no mpch ho Y vd 37,6 gamh6n hqp hai mu6i hiru co c6 kh6i lugng hon k6m ll,6 gam Hqp ch6t Y c6 khi ndng tham gia phin img tr6ng bpc, d6t ch6y hoan todn Y rdi cho san phdm h6p thu h6t vAo binh chrla dung dich nu6c v6i trong (Ca(OH)2) du, th6y kh6i lugng binh tdng 24,8 gam
X6c dinh c6ng thric c6u t4o cira este
2 EC hda tan htit 38,369 h6n hqp gdm Mg, Fe:O+, Fe(NO:)z cAn 0,87 mol dung dich HzSO4 lodng, sau
khi c6c phal ung xtty rahodn todn thu dugc lll,46 gam mui5i sunfat trung hda vd 5,6 lit khi (dktc) hdn
hgrp khi X g6m 2khi,tj, khdi hoi ctra X so voi Hz ld 3,8 @i6t c6 mOt khf kh6ng mdu h6a n6u khdng khO
Khdi lugng Mg trong h6n hqp ban ddu ld bao nhiOu?
-n6t-Thi sinh duqc s* dqmg bdng tudn hodn Cdn b0 coi thi khdng gidi th{ch gi thAm