. T Theo phuang trinh phan irng tim dugc s6' mol C204~ (0,00665 mol').
^ C M(C2 0 ^ " ) = 1000 .0,00665 : 25 = 0,266 M .
8.10. Dap an diing la Ạ
Phuong trinh phan iJng chuin d6 :
2HCl+BăOH)2 -> BaClj + 2H2O (1)
Theo (1) : nBa(0H)2 = - • "HCl = | 0,02715 . 0,245 = 0,00333 mol.
- > C M( Bă0H)2) = 0,00333 : 0,02 = 0,1665 M .
8.11. Dap an dung la C.
2 3 8
S6' mol CI tinh theo AgCl l£l : n „ - = — =0,016 mol 143,5
Ggi s6' mol NaCl c6 trong 1,032 gam h6n hop la x. T a c 6 : 58,5x + 74,5.(0,016 - x) = 1,032 gam.
- > X = 0,01 %NaCl = Q'Ql-^^'^ 100% = 56,686% 1,032 1,032
8.12. Dap an diing la D.
8.13. Dap an dung la D.
Dung dung dicli CăOH)2 nhan biel dugc klu ^02 . Diing giáy quy tim im phan biet dugc khi HCl va O2.
8.14. Dap an dung la Ạ
8.15. Dap an dung la B.
Phirong trinh phan ti-ng chuán d6 :
5Fe2++ Mn04 + 8 H " -> Mn^^ + 5 Fê^ + 4H2O (1) Theo (1) : n^^j. = 5. n^^^^. = 5. 0,04 .0,1 = 0,02 mol.
mpe = 0,02 .56 =1,12 gam. %mpe = — .100% = 98,24%.
1,14
Chirotng 9
Hon HOC vi!| vnN ff>€ PHflT TRIIN
KINH K - Xn HOI - AAOI TRITONG
9.1. Dap an diing la B.
9.2. Dap an dung la C.
9.3. Dap an diing la Ạ
Quang manhetit (Fe304 ) va pirit (FeS2) : San xuS't sat. Quang boxit (AI2O3) va criolit (NajAlFg) : San xuát nhom. Quang cancopirit hay pirit đng (CuFeS2) : San xuát đng. Quang dolomit (CaC03 - MgC03) : San xuát Ca va Mg. Mud'i an : San xuát Nạ
Quang cromit ( ^ 2 0 3 ) : San xuát crom. Quang apatit (Ca5F(P04)3) : San xuát P. . Cdt (Si02) : San xuát Sị
Quang cacnalit (KCl.MgCl2.6H2O) : San xuát K.
9.4. Ddp an diing la D. (adsbygoogle = window.adsbygoogle || []).push({});
9.5. Dap an diing la Ạ
0,065 .100 .100 = 6500 gam = 6,5 kg.
9.6. Dap an dung la B.
230000 365 12 M6t nam m6t ngudi su dung het '• '•— kgC. M6t nam m6t ngudi su dung het '• '•— kgC.
94000 ^ Qu(5c gia 20 trifu dan da sir dung khd'i lugng than (85%C) 1^ Qu(5c gia 20 trifu dan da sir dung khd'i lugng than (85%C) 1^ ^ ^ 230000.365.12 . . p ..p^ .35^, . ^ s ^ , , ; . , 0 6 , ^
94000 ^ <
m = 252,165. l O ^ T than (mdt lirong than khdng 16).
9.7. Dap an diing la B.
Khdi luang khi SO2 trong nha may thai ra trong m6t gid la : ^ = 2 ^ ^ 64 ^ ^ ^ ^ ^Q^^ ^ tán.
^ 2 365.24 32
9.8. each lam td't nhát la C.
Khi NH3 khuyéch tan ra khap phong thi nghifm, gap khi clo xay ra phan ling :
3CI2 + 2 NH3 N2 + 6HC1
• • HCl + NH3 NH4CI , \
NH4CI la chat ran, tan v^o nude rijra, loai duac khi clọ
9.9. Dap an dung la D.
Dung nu6c vOi trong khuáy manh d^ lau, cac cation bi ktft tiia du6i dang hidroxit.
9.10. Dap an diing la Ạ
Khi cho cac khi sue qua dung dich CăOH)2, cac khi d6c nhu HF,
CO2, NO2, SO2 da phan lirng va bi giu lai : 2HF + CăOH)2 ^ CaFj + 2 H2O
SO2 + Că0H)2 ^ CaS03i + H2O CO2 + CăOH)2 -> CaCOj^ + H2O 2NO2 + Că0H)2 ^ CăN03)2 + H2O 9.11. Dap an diing la B.
Dung giám an sSn (c6 trong bép) rira qua, miii tanh se hét. ^
9.12. Dap an dung la C.
Sue kh6ng khi hay phun nude tren eac dan phun d^ nu6c tiép xiic nhieu v6i kh6ng khi, tiic la tiép xiic nhi^u v6i oxị Khi do xay ra phan ling :
4 Fe(HC03)2 + O2 + 2 HjO 4 Fe(OH)3 4^ + 8 CO2 t
D o vay a cac nha m a y nirdc d^u c 6 d a n p h u n rát 16n. N u d e ngSm dugc k h a i thac l e n d u g c p h u n n h i e u lin trudrc k h i qua l o c .
9.13. Dap s6'dung la D . K h i d o t k h i tir n h i e n c h i c d CH4 va C2H(, c h o k h i CO2 d ^ t a o r a s6 dạ K h i d o t k h i tir n h i e n c h i c d CH4 va C2H(, c h o k h i CO2 d ^ t a o r a s6 dạ ncH4 = ^ • 7^ = ^'^"^ ' = 0 . 0 5 6 m o l . n c - 2,24 + 2 .0.0.'i6 = 2.352 m o l . m N a j C O , = 2 , 3 5 2 .106 = 249,3 g a m , 9.14. D a p an dung la A . Cac p h u o n g t r i n h p h a n img : ( C g H i o O . O n + n H 2 0 n C 6 H . , 2 0 6 ( 1 ) C6H,20(s — " " " ^ ) 2 C2H5QH + 2 CO2 t ( 2 ) K h 6 ' i l u g n g r u g u C2H<iOH t r o n g 1000 l i t c 6 n 9 0 ° bang : K h d ' i l u g n g n g u y e n l i e u cSn d i i n g l a : 720.162 100 100 m = . . = 3 0 1 8 , 6 3 k g . 2.46 7 0 6 0 * 9.15. D a p a n d u n g l a C. P h u a n g t r i n h p h a n iJng : S + O2 - > S 0 2 t 300.1.3 100 m s = = 3,9 t a n . - > m s o ^ = 3,9 .64 : 3 2 = 7,8 tán. 9.16. D a p a n d u n g l a B. T y le : S6 n g u y e n t u C : SO n g u y e n tir F : 86' n g u y e n tijr C I 9.93 3 U 3 . 58,64 12 • 19 • 35,5 2 4 2 0,83 1
COng thufc phan tir Ik 9.17. D a p an d u n g la A . 9.18. D a p a n d i i n g la D. 9.19. Dap an d u n g la B . 9.20. Dap an d u n g la C. 9.21. D a p an d i i n g la B. 9.22. D a p a n d u n g la D. 1,65 : 1,65 2 : 2 CF2CI2.
MUC L U C
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Lai noi đu 3
Phan I Ph^n I I
Chucrng 1 - Este - Lipit 5 141
Chuang 2 - Cacbohidrat 27 162
Chucrng 3 - Amin - Amino axit - Protein 39 170
Chuang 4 - Polime va vftt lieu polime 60 185
Chuang 5 - Dai cucfng vi kim loai 71 190
Chuang 6 - K i m loai kifem - k i m loai kidm th6 -
93 204
nh6m. 204
Chuang 7 - Crom - Sat - D6ng 113 218
Chuang8 - Phan biet m6t s6' chat v6 cọ
Chu^n d6 dung dich. 131 237
Chuang 9 - Hoa hoc va van de phat tri^n Kinh té