8.5. M6t dung dich chuan HCl 0,154M duoc dung di x5c dinh ndng do
dung dich NaOH. Biét rang 33,5 ml dung dich axit vira dii di trung hoa 25,0 ml dung dich NaOH. Nong do mol cua dung dich NaOH la : Ạ 3,79M; B. 0,11M;
C. 4,48M ; D. 0,208M. Hay chon dap an dung. Hay chon dap an dung.
8.6. Cfin bao nhieu ml dung dich KMn04 0,20M d^ oxi h6a 25,0 ml dun? dich FeS04 0,40M trong m6i trudng axit ? Phan ling h6a hoc cua phuong trinh ion thu gon :
5 Fe2+ + Mn04 + 8 H* Mn^^ + 5 Fê^ + 4 H2O
Ạ 50,0 ml ; B. 25,0 ml ; C. 10,0 ml; D. 2,0 ml. Hay chon dip An dung.
8.7. D^ pha ché 500 ml dung djch NaCl 0,2M, ta láy : Ạ 11,7 gam NaCI hoa tan trong 500 ml nude ;
B. 11,7 gam NaCl hoa tan trong nu6c de c6 tdng th^ tich la 500 ml ; C. 5,85 gam NaCl h5a tan trong nude c6 tdng th^ tich la 500 ml ; C. 5,85 gam NaCl h5a tan trong nude c6 tdng th^ tich la 500 ml ; D. 2,925 gam NaCl h6a tan trong 500 ml nu6c.
Hay chon dip in diing.
132
S. Chuan do 25,0 ml mot mftu dung djch NaOH phai dung 27,88 ml dung dich H 2 S O 4 0,159M. N6ng d6 mol cua dung dich NaOH la bao nhieu ? dich H 2 S O 4 0,159M. N6ng d6 mol cua dung dich NaOH la bao nhieu ?
Ạ 0,143M; B. 0,177M ; C. 0,285M; D. 0,356M.
9. Ion Mn04 trong m6i trucfng axit, oxi hoa ion oxalat C 2 O 4 , san ph^m
la ion Mn^"", CO2 va H2O:
2Mn04 +5C20^~ + 16H+ -> 2Mn^''+10CO2 + 8 H 2 O
Biét rang 31,72 ml dung dich KMn04 0,084M tac dung vira du vdi
25,0 ml dung dich Na2C204. Nong d6 mol cua ion 0 2 0 4 " trong dung dich ban dSu la :
Ạ 0,0426 M; B. 0,107 M; ^ C. 0,213 M; D. 0,266 M.
Hay chon dap an diing.
.10. 20 ml dung dich Ba(0H)2 duac chu^n d6 bang dung dich HCl 0,245 M. Néu dung het 27,15 ml dung dich HCl thi n6ng d6 mol ciia dung dich Bă0H)2 1^ bao nhieu ?
Ạ 0,166 M; B. 0,180 M; C. 0,333 M ; D. 0,666 M.
.11. Hoa tan 1,032 gam h6n hgrp NaCl va KCl trong nu6c, sau do chuyen
hét ion C f thanh AgCl. Kh6i luong AgCl la 2,296 gam.
Thanh p\vkn cua NaCl theo khoi lugng trong h6n hap la bao nhifiu ? Ạ 28,343% ; B. 5,669% ;
C. 56,686% ; D. 2,834%. , <M
•12. C6 ba dung dich C U S O 4, ZnCNOj) va A I C I 3. Dilng thu6'c thu nao c6 th^ phan biet tirng dung dich ?
Ạ HCl; B. NaOH; C. AgN03; , D. Ca B va C.
8.13. Co 3 chát khi rieng biel la hidro clorua, cacbon dioxit va oxị Chi thu6'c thir nao de phan biet duoc mdi khi ?
Ạ Dung dich CăOH)2;
B. Giáy quy tim Im ; C. Dung dich BaClj; D. Ca A va B.
Hay chon dap an dung. (adsbygoogle = window.adsbygoogle || []).push({});
8.14. Dan 16 lit h6n hap khi CO va COj di qua dung dich Că0H)2 dir, thu
duoc khi Ạ Di dot chay het khi A cdn 2 lit khi oxi (cac khi do a ciJng di^u kien). Thanh phin theo the tich cija m6i khf trong h6n hop la :
Ạ 25% CO va 75% CO2 ;
B. 75% CO va 25% CO2 ; .
C. 40% CO va 60% COj ; D. 60% CO va 40% CO2 .
Hay chon dap an diing.
8.15. Chuyen hoa hoan toan sat c6 trong 1,14 gam mot mSu thep thanh ion Fe trong dung dich. Axit hoa dung dich nay bang H2SO4 loang. dung djch nay tac dutig vira du v6i 40 ml dung dich KMn04 0,1 M. Thanh phdn theo khfíi lugng ciia sat c6 trong mSu thep la :
Ạ 95,5% ; B. 98,2% ; C. 93,5% ; D. 99,0%. Hay chon dap ^n diing.
8.16. Co 4 dung dich rieng biet : H2SO4, BaCl2, HCl, NaNOg. Nd'u duoc dung them thuoc thir la quy tim c6 the nhSn biét t6'i da la bao nhieu dung djch ?
Ạ 1 dung dich ; B. 2 dung dich ; C. 3 dung dich ; D. Ca 4 dung dich.
Chitoing9
Hon HOC vn VHN D€ PHRT rnilN
KINH TC - Xn HOI - MOI TRl/ONG
g/f. Loai ngudi hien dang si!r dung cac ngudn nang lirang chinh la :
9.2.
^3.
1. Thirc phdm ; 2. Gi6 ; 3. Than da ; 4. Thac nuorc ; 5. G6 ; 6. Khi tir nhien ; 7. Nang lirgng nguyen tir; 8. DSu mo ; 9. Nang lugrng mat trcri, Nguon nang lugng hoa hoc la :
Ạ 2, 3, 4, 7, 9 ; B. 3, 6 ,8 ;
C. 1, 5, 8 ; D. 2, 6, 7, 9. ' Hay chon dap an diing. Hay chon dap an diing.
Cac nganh c6ng nghiep dang sii dung cac ngu6n nguyen li6u:
Ị Cat; 2. Rugu etylic ; 3. Canxi cacbua ; 4. Khoang vat pirit; 5. Nu6c bi^n ; 6. Axit sunfuric ; 7. To nilon - 6,6 ; 8. KhCng khị
Ngu6n nguyen lidu tu nhien la : Ạ 1,3, 6, 7 ;
C. 1, 4, 5, 8 ;
Hay chon dap an diing.
B. 2, 5, 7 ,8 ; D.'3, 5, 6, 7. D.'3, 5, 6, 7.
Co nhOng quang va khoang vat : Criolit, manhetit, cancopirit (CuFeS2),
boxit, xiderit, dolomit, da v6i, mu6'i an, cromit, apatit, cat, pirit va cacnalit.
Til cac quang va khoang vat tr6n c6 th^ san xuS't dugc cac kim loai :
Ạ Fe, Cu, Al, Ca, Mg, Na, Cr, K, Si, P. B. Fe, Cu, Al, Ca, Mg, Na, Sị
C. Fe, Cu, Al, Ca, Cr, P, Ag, Sn. D. Fe, Al, Na, Cr, Ag, Pb, Sị Hay chon dap an dung. (adsbygoogle = window.adsbygoogle || []).push({});
9.4. Co nhung loai polime : Thuy tinh plexilas, cao su thidn nhien, cao su
cloropen, protit, PVC, xenluloza, cao su buna - S, to lapsan, tinh hot saccaroza, to nilon - 6,6.
NhOng polime thien nhiSn la :
Ạ Cao su tir nhien, protit, cao su buna - S, xenluloza ; B. Cao su cloropen, tinh bSt, to nilon - 6,6, saccaroza ; C. Cao su buna - S, to lapsan, protit, xenluloza ; D. Cao su tir nhien, protit, xenluloza, tinh b6t. Hay chon dap an dung.
9.5. Trong nuoc bidn c6 khoang 60 nguyen t6' hoa hoc. Trong 1 lit nirọ
bien c6 khocng 19 gam CI 11,8 gam Na"*", 0,065 gam Br . Tir 100 m^ nude bien c6 the khai thac duac t6'i da :
Ạ 6,50 kg Br2 ; B. 1,30 kg Brj ;
C. 3,25 kg Brj ; D. 6,75 kg Br2.
Hay chon dap an diing.
9.6. M6t ngay, m6i ngucfi dan sir dung khoang 230.000 kcal nhidt. Gia sir
lugng nhiet nay dugc cung cáp bang than da : Ta da biet 1 mol cacbon (ran) khi chay hoan toan cho 94 kcal nhifet.
Nhu vay, mot quoc gia c6 20 tridu dan, m6i nam (365 ngay) tieu ton kh6'i lugng than (chura 85% cacbon) la :
Ạ 472.10^T; B. 252,150. lÔT ; C. 278,620. lÔT ; D. 326,430. lÔT . Hay chon dap s6' dung.
9.7. M6t nha may nhiet dien tieu t6n 2,2 tridu tán than m6i nam. Than chira 3,5% luu huynh, trong do 90% thôt ra du6i dang khi SOj. Nd'u nha 3,5% luu huynh, trong do 90% thôt ra du6i dang khi SOj. Nd'u nha may nay kh6ng c6 thiet bi loc khi thai thi m6i gi5 da thai ra m6i trudng lugng khi SO2 la :
Ạ 12,4 tán.
B. 15,822 ta'n. C. 16,436 ta'n. D. 14,584 tán.
Hay chon dap an dung.
9.8. Trong mot budi lam thi nghiem, mot hoc sinh so y de khi clo thoat ra
phong thi nghiem, gay 6 nhi^m nang. Di loai bo khi c5n lam :
Ạ Phun bet nhdm.
B. Phun dung dich NaCl loang. C. Phun hoi khi NH;,.
D. Phun núoc voi trong. j
Hay chon each lam td't nha't. .S
9.9. Mot loai nude thai bi 6 nhi^m bai cac kirn loai nang Pb^"^, Cu^"^, Fê^Mn^^. Fê^Mn^^.
Hoa cha't t6t nha't diing de chong 6 nhi6m nudrc la :
Ạ NaOH du .
B. Dung dich H2SO4 loang. C. Sue khi CO2.