CH3-CH2-COOH, HO-CH2-CH2-CHO, CH3 - CH(OH) - CHO, CH3 - CO - CH2OH. CH3 - CH(OH) - CHO, CH3 - CO - CH2OH.
Co 3 dong phan khong tac dung v6i Na :
Ipl^ CH3-COOCH3, HCOOCH2-CH3,CH3-0-CH2-CHỌ
ChuangZ CnCROHIDRRT 2.1. Dap in dung la D. 2.2. Ddp dn dung la C. 2.3. Dap kxs. dung m A . 2.4. Ddp dn diing la A . 2.5. Dap an diing la B. 2.6. Dap an diing la C. 2.7. Dap dn dung la B. 2.8. Dap an diing la D. 2.9. Dap an dung la A 2.10. Dap an dung la B. 2.11. Dap an dung la B.
ran khdng tan trong nu6c.
2.12. Dap an dung la D.
2.13. Dap an diing 12i C.
2.14. Dap an diing la C.
2.15. Dap an dung la D.
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2.16. Dap an diing la B. ,
PTK cua xenlulozo khoang 1.700.000 - 2.400.000 dvC. PTK cua tinh b6t khoang 200.000 - 1.000.000 dvC.
2.17. D a p s d d d n g m A .
Cac phuang trinh phan iJng :
(C6H,o05)n + n H 2 0 - ( H ^ ) ^ n Q H . s O g CgHijOg > 2C2H5OH + 2 C 0 2 t
180 2.46 = 92
(1) (2) (2)
Khd'i lugrng tinh b6t nguyen chat : nitb = 1000kg . 80'/6 = 800 kg. Theo (1) va (2) :
(C6H,o05)„ ^ nCgHisOg 2nC2H50H
162n 2.n.46
CiJ- 162 kg tinh b6t san xiiát dugc 46 . 2 = 92 kg C2H5OH.
Vay 800 kg tinh bot san xuát duoc m kg C2H5OH.
800.92
m - 162 = 454,32 kg
Hieu suát phan ling dat 75%, uen kh6'i luang C2H'jOH thirc te thu duac la : 454,32 . 75% = 340,74 kg.
Dap s6' diing la C.
Phuang trinh phan \xn% :
CgHijOg ) 2 C 2 H 5 O H+ 2 C 0 2 t 180 gam X gam 180.11,2 2 . 22,4 lit 11,2 lit X = = 45 gam. 2.22,4
Hieu suát phan ling dat 90%, nSn khd'i luang glucozo cSn la : 45.100
90 = 50 gam.
Dap an dung la Ạ (adsbygoogle = window.adsbygoogle || []).push({});
Lay tiir m6i lo ra m6t it dung dich d^ lam thi nghiem.
Cho vao m6i dung diclti lugfng nho Cu(OH)2/ O H " va dun nhe : 163
- d dung dich n^o xuát hitn k€t t\ia m^u do gach, 66 Ik dung dich
glucozọ O day da xay ra phan irng :
CH2(OH)(CHOH)4CHO+2Cu(OH)2 + N a O H
-> CH2(OH)(CHOH)4COONa+ Cu20>l' + 3 H 2 O
- d dung dich nao Cu(OH)2 tan va tao thanh dung dich mku xanh da
t r 6 i , 66 la dung dich glixerol : Glixerol hoa tan Cu(0H)2 tao thanh
phtic chat tan, m^u xanh da trdị "«' - d dung dich n^o Cu(0H)2 tan vk tao th^nh dung dich mkxi xanh nhat,
do la dung dich axit axetic :