1. sb~rAoDVC & DAO T ~ O K* THI HQC SXNH G I ~ ITHANH P B ~- L&' 9
HA ~ 0 1 N6m hoc 2012-2013
M8n thi: H6a HQC
Nghy thi: 05 - 4 - 2013
Thivi gian lhm bli: 150phut
( . t ! thi gdm 2 trang)
Clu I ( 3,0 diim)
I/ C ~ Osua6 phAn img:
00
+ (Nj't
F H,SO,(loang) (v +NBOH
,(2) -Fe(OH13 (GI
Q) +ta,it"/
~ i k t:(X)+ H2S04oolg) +(Y) +(G)+ H20. vikt ,hum, trlnh hoh hpc minh hpa.
21 C6 chc chit khi bt>ilh hai nu6c sau:khi C02,khi 02,khi SOz.N ~ Ud h g H2SOs d$c hoac CaO cb
th&l h kh6 duqc nhtingkhi nho nbi trCn. GiAi thich @i sao?
Clu I1 ( 4,0 dihm)
11Neu hi$n tuqng h6a h ~ cv$ vikt chc phuong trinh hoA h ~ cminh hpa cho cac thi nghigm sau biy:
a) Nh6 tu tu din du dung djch HF vdo Ang nghiem d p g boi Si02.
b) ThPm vAi gipt pllenolphtalein vao 6ng nghiem chua dung djch NaOH lohg, sau 66 them ti$
lupng du dung djch HCl.
c) D& tir tir dkn du khi CH3-CH=CH2vho Brignghiem ch3a dung djch brom.
d) Cho tiT tir bin du dung djch HzS04vAo Ang nghiem chira bat CuO, rbi sau d6 them tikp dung
djch NaOH du.
21 X, Y, Z I&Iuqt l i mu& cua ciic kim loqi nnatri, kali, bari thoh m h chc diku kien sau:
Z +X -.c6 chit khhi A v&c6 chit kkt tha C.
~ i & tkhi A c6 phh img l h rnh rnhu dung djch brom vh k&ttea C khbng tan trong dung djch
HCI. C h ~ nchc mu& X, Y, pha hqp va viit chc phuong trjnll hobh ~ cminh hog.
CQu111(4,O d l h )
I/ D& 5,6 lit h6n hgp khi A (dktc) gbm metan, etilen va axetilenvho dung djch chi chim 40gam brom,
saukhi ch p h h img xtiy ra hob t o h thu duqc 500 mldung dich trong 66 brom c6 nbng de 0,lM. N ~ U
dem ddt chhy h o h toin 2,8 lit h6n hpp khl A (bktc) trong oxi du &hithu h p c 4,05gam nubc.
a) ~ i & tc9c phrrmg trinh h6a h ~ cdB xfty ra.
b) Tinh thbh phhn phkn t r h theo th6 tic11m8i khi trong h8n hqp A.
21 Cho 19,6garn h6n hgp X g8rn canxi vA canxi cacbua thc dwg h&tvdi nubc, thu d u ~ c8,96 lit h6n
hpp khi Y (dktc).
a) Tinh kh6i lupng m6i chit cb trong h6n hlrp X.
b) Dem t o h b$ luwg h8n hqp khi Y nung nbng v6i x k thc Nj thl xhy ra hai p h h img:
C2Hz 4- H2 ' t o ) c2H4(1) C2H2+2H2
Ni,to
c2H6 (2).
Sau p h h h g thu duac hbn h q ~khi Z g8m CzH6,C2H4,Hzdu va C2H2 du, ti kh6i c6a h6n hqp Z
so vbi hidro b h g 8,s.D& t o h b6 luqng h8n hqp kki Z di chm qua binh dwg dung djch brom du,
sau khi c6c p h h h g xAy ra h o h t o h thiy cbn 3,36 Iit h8n h9p khi (dktc) t11oAt ra khdi blnh. Tinh
thhh p h h p h h t r h theo thk tich cfia m8i khi trong h8n hqp 2.