Trng THCS v THPT Nguyn Khuyn
NG DNG BT BO HA V NG DNG1. Axit cacboxylic no, mch h X c cng thc
thc nghim (C3H4O3)n, vy cng thc phn t ca X l:
A. C6H8O6.
B. C3H4O3.
C. C12H16O12.
D. C9H12O9.
(Trch thi tuyn sinh H C khi B 2008)2. Hirocacbon X tc dng vi
Brom, thu c cht Y c cng thc n gin nht l C3H6Br. CTPT ca X l:
A. C3H6B. C6H12C. C6H14D. B hoc C u ng.3. Mt hp cht hu c X cha
87,805% C v 12,195% H v khi lng. Bit 8,2 gam X khi tc dng vi
AgNO3/NH3 d to ra 18,9 gam kt ta vng nht. S CTCT c th tha mn cc tnh
cht ca X l
A. 5. B. 3. C. 2. D. 4.
4. Cho 4,48 lt hn hp X (ktc) gm hai hirocacbon mch h tc dng va
vi 700 ml dung dch Br20,5M. Sau khi ton b lng kh b hp th ht th khi
lng bnh tng thm 5,3 gam. Cng thc phn t
ca hai hirocacbon l:
A. C2H2 v C2H4.B. C2H2 v C3H8.C. C3H4 v C4H8.D. C2H2 v C4H6.
5. Cho 4,48 lt hn hp X ( ktc) gm hai hirocacbon mch h li t t qua
bnh cha 1,4 lt dung dch
Br2 0,5M. Sau khi phn ng hon ton, s mol Br2gim i mt na v khi lng
bnh tng thm 6,7 gam.
Cng thc phn t ca hai hirocacbon l:
A. C3H4 v C4H8.B. C2H2 v C3H8.C. C2H2 v C4H8.D. C2H2 v
C4H6.(Trch thi tuyn sinh H C khi A 2007)
6. Hn hp X gm ru metylic, ru etylic, ru propylic v nc. Cho a gam
G tc dng vi Natri d
c 0,7 mol H2. t chy hon ton a gam X thu c b mol CO2 v 2,6 mol
H2O. Gi tr ca a v b ln
lt l:
A. 42 gam v 1,2 mol. B. 19,6 gam v 1,9 mol .
C. 19,6 gam v 1,2 mol. D. 28 gam v 1,9 mol.
7. Cho m gam hn hp gm hai cht X v Y u thuc dy ng ng ca axit
metacrylic tc dng vi 300
ml dung dch Na2CO30,5M. Thm tip vo dung dch HCl 1M cho n khi kh
CO2ngng thot ra th thy tiu tn ht 100 ml. Mt khc, t chy hon ton m
gam hn hp A ri dn sn phm chy qua bnh I
cha dung dch H2SO4c, sau qua bnh II cha dung dch NaOH c th thy
tng khi lng ca bnh II nhiu hn bnh I l 20,5 gam. Gi tr ca m l:
A. 12,15 gam. B. 15,1 gam. C. 15,5 gam. D. 12,05 gam.
8. t chy hon ton x gam hn hp gm hai axit cacboxylic hai chc, mch
h v u c mt lin kt i C=C trong phn t, thu c V lt kh CO2 (ktc) v y
mol H2O. Biu thc lin h gia cc gi tr x, y v V l:
9. t chy hon ton 3,42 gam hn hp gm axit acrylic, vinyl axetat,
metyl acrylat v axit oleic, ri hp
th ton b sn phm chy vo dung dch Ca(OH)2 (d). Sau phn ng thu c 18
gam kt ta v dung dch X. Khi lng X so vi khi lng dung dch Ca(OH)2ban
u thay i nh th no?
A. Gim 7,74 gam. B. Tng 7,92 gam. C. Tng 2,70 gam. D. Gim 7,38
gam.
(Trch thi tuyn sinh H C khi A 2011)
10. t chy hon ton x mol axit cacboxylic E, thu c y mol CO2 v z
mol H2O (vi z = y x ). Cho x mol E tc dng vi NaHCO3 (d) thu c y mol
CO2. Tn ca E l
A. axit fomic. B. axit acrylic. C. axit oxalic. D. axit
aipic.
(Trch thi tuyn sinh H C khi A 2011)
11. Cho bit a mol mt cht bo c th phn ng ti a vi 4a mol Br2. t
chy a mol cht bo thu c b mol H2O v V lt CO2(ktc). Biu thc lin h gia
a, b v V l:
A. V = 22,4 (4a + b). B. V = 22,4 (6a + b).C. V = 22,4 (7a + b).
D. V = 22,4 (4a b).12. X phng ha mt hp cht c cng thc phn t C10H14O6
trong dung dch NaOH (d), thu c glixerol v hn hp gm ba mui (khng c
ng phn hnh hc). Cng thc ca ba mui l:
A. CH2=CH-COONa, HCOONa v CH C-COONa.
B. CH3-COONa, HCOONa v CH3-CH=CH-COONa.
C. HCOONa, CH C-COONa v CH3-CH2-COONa.
D. CH2=CH-COONa, CH3-CH2-COONa v HCOONa.
(Trch thi tuyn sinh H C khi A 2009)
14. Cho 13,8 gam cht hu c X c cng thc phn t C7H8tc dng vi mt lng
d dung dch AgNO3trong NH3, thu c 45,9 gam kt ta. X c bao nhiu ng
phn cu to tha mn tnh cht trn?
A. 4. B. 5. C. 6. D. 2.
(Trch thi tuyn sinh H C khi A 2011)
15. Cng thc phn t no di y khng th l aminoaxit (ch mang nhm chc
NH2v COOH):
A. C4H7NO2.
B. C4H10N2O2.
C. C5H14N2O2.
D. C3H5NO2.
16. Cng thc no di y khng th l ipeptit (khng cha nhm chc no khc
ngoi lin kt peptit CONH, nhm NH2v COOH):
A. C5H10N2O3.
B. C8H14N2O5.
C. C7H16N2O3.
D. C6H13N3O3
Gv: DangVu
Trang 1/5_m 093
