C S u 8. Cho 2 hidrocacbon A v^ B deu cf the khị A c6 cong thiJc C2xHy; B c6 cong thiJc CxH2x. Biét ti khoi hdi cua A so vdi khong khi bing 2 v a ti khoi hdi cua B so vdi A m 0,482. V § y long so dong phan c u a A v& B m:
Ạ 3 •« • B . 4 C.'5"" D . 6 - • C S u 9. Cho 3,36 lit khi (dktc) hon hdp gom mpt ankan v a 1 anken Ipi qua ni/dc
brom thay cd 8 gam brom tham gia phan Úng. Khoi liTdng cua 6,72 lit hon hdp n^y nSng 13 gam. V a y cong thiJc phan tuT cua ankan v a anken 1^:
Ạ CH4 v a C4H8 B . C2H6 v a CsHio
C . C 3 H H v a C 3 H 5 D . C 2 H 4 v a C 4 H s C S u 10. Mpt hon hdp khi X g6m 2 olefin la dong ding k e tiep nhaụ Neu cho 1,792
lit hon hdp X (d 0"C, 2,5 atm) qua blnh chiJa dung dich brom thi thay khoi liTdng ciia blnh tang len 7 gam. Cong thỉc phan tuf cua 2 olefin 1^: * * '
A. C 2 H 4 v a C 3 H 6 B . C 3 H 6 v a C 4 H i t C . C 3 H 8 v a C 3 H 6 D. C4H8 v a C5H1,,
C S u 11. Dot chay hôn toan 4,48 lit hon hdp C2H4 v a C3H6 cd ti khoi hdi so vdi oxi
\k 1,09375, roi cho toan bp san pham v^o 500ml dung dich NaOH 1,8M thi thu
di/dc s a n pham v a nong dp mol tifdng tfng 1^:
Ạ NaHCO3 0,2M v^ N a 2 C 0 3 0,8M. .'3i&C,l'i«ai/l4v ; - .'.^ ' "
B. Na2C03 0,6M v a NaOH 0,1M diT. jrsiL..t,\- lUud (i/:f;c>h .5 ' ,^ "
C. N a H C O j 0,02M va Na2C03 0,8M. {; f,im{i^-(M'&>f .v ^ ' •!
Phan dgng vi phudng ph^p gl5i H6a h(?c 11 HQu C Q - B8 Xuan Hung
C a u 12. Sau khi tdch hidro, hon hdp etan propan tao th^nh h6n hop etilen va propilen. Khói lifdng trung blnh cua hon hdp etilen propilen nho hdn khói
lifdng trung binh cua hon hdp ban dau 1^ 6,55%. V$y % etan \h propan trong
hon hdp ban dau la:
Ạ 96,18% va 3,82% ^ B. 98,3% vS 1,7%
C. 80% va 20% • ' • • ,. " i ' D. 95,5% va 4,5% « « i ' S ' ^ ; ' ^ '
CSu 13. Cho hon hdp X gom etilen va H2 c6 ti khoi so vdi H2 b^ng 4,25. Dan X qua bpt Ni nung nong (hif u suat phan iJng hidro hda anken bkng 75%), di/dc hon hdp Ỵ Vay ti khoi cua hon hdp Y vdi H2 h\ng: , , ,, ,' ,
Ạ 5,44 B. 5,23 C. 5,67 * D. 6,76
Cau 14: Cho 3,12 gam ankin X phan iJng vdi 0,1 mol H2 (xuc tic Pd/PbCOj, t"), thu diTdc hon hdp Y chi c6 hai hidrocacbon. Cong thiJc phan tuf ciia X la
,^ Ạ C2H2., ' r ^ ' ' , ^ ' , . ; ' B . C 5 H 8 ' c . C 4 H 6 • D . C 3 H 4
.;> " Trich di thi tuyen sink Cao dang nam 2010" C&u 15. Khi cho isopren phan iJng vdi HBr theo ti I9 mol 1 : 1 thi thu diTdc bao
nhieu san pham khdc nhau: n:;-:: •i«^>qoiehr}3ffi"l .A
Ạ 2 B. 3 ,3..rj:i C . 4 D. 6 -Mjrf .^j
CSu 16. Khi cho but-l,3-dien phan iJng vdi H C l theo ti 1? mol 1 : 1 thi sin phim
thudifdcla:
Ạ 1 ^ B . 2 C . 3 D . 4
CSu 17. Cho sđo phan iJng sau: ¥ff ' •'IvA
• Y „ i . i w 35% V 80% V 60% „ 100% ^ u ofr:ri! s:«fi
Xenlulozd > X > Y > Z > Cao su buna De dieu che"diTcJc 2 tan cao su buna thi khoi li/dng xenlulozd can lay la: Ạ 35,71 tan " B . 39,66 tan C. 20,56 tan D. 45.67 tan
C&u 18. Hidrocacbon X c6 cong thifc phan tuf la CsHx c6 the cpng hdp vdi hidro tao
ra ankan mach nhanh va A c6 the tac dung vdi AgNOs/NHs tao ra ket tua mau vang. Vay ten cua X la:
Ạ 2-metylbut-l-in , ^^ỵ^,., B. 3-metylbut-l-in,,^,^5 5,,,^y,rf„frf,6&.