Mekhoa ea Teko
Lebitso la Mohato: Hypromellose-hypromellose-hypromellose - Khohlano ea Sehlopha sa Hydropxx ea Hydroxypropoxy
Boholo ba kopo: Mokhoa ona o sebelisa mokhoa oa hydroxydromp oa hydromp oa hydromp oa hydroxydromp oa ho tseba litaba tsa hydroxxpropoxy ho hyplomellose. Mokhoa ona o sebetsa ho hypromellose.
Molao-motheo oa Mokhoa:Balalitaba tsa hydroxypropix Sehlahisoang sa tlhahlobo ho latela mokhoa oa ho hanana.
Reaagent:
1. 30% (G / g) Tharollo ea chroxium Trioxide
2. Hydroxide
3. Phello ea sesupo sa Phenolphthalein
4. Sodium Bicarbonate
5. Dilute Sulfuntic Acid
6. Potassium Iodide
7. Sodium thiosulfate tharollo ea Tiration (0.02mol / L)
8. Sturch e starch
Lisebelisoa:
Mohlala:
1. Sodium hydroxide tharollo ea Talation (0.02mol / L)
Thato: Nka Tharollo ea Sodium ea Bydium ea Bydium ea Bydium e hlahiloeng e apereng bocha ho e etsa 1000ml.
Taba: Nka 6g ea potasiamo e tloaelehileng ea potassim hydrogen phthate e omisitsoeng ka 105 ° Kenya lithaele tse 2 tsa Phanolphthalein ka taba ena, sebelisa ntlha ena ea pheletso, 'me ha e fihla e le pinki ka botlalo,' me ha e fihla e le pinki ka botlalo Tharollo e 'ngoe le e' ngoe ea li-sodium hydroxide e lekanang (1mol / l) e lekana le 20.42mg ea potasiamo hydrogen phthate. Lekala khatello ea tharollo ena e ipapisitse le tharollo ea tharollo ena le palo ea potasiamo hydrogen phthary phtharae. Boikemisetso bo boholo makhetlo a 5 ho etsa mahloriso 0.02mol / l.
Boloka: E behe ka botlolong ea polyethylenene 'me u boloke e tiisitsoe; Ho na le masoba a mabeli ka sekoting, 'me tube e le' ngoe ea khalase e kenngoe ka sekoting se seng le se seng, tube e le 'ngoe e hokahane le tube ea soda,' me tube e le 'ngoe e sebelisetsoa ho anya mokelikeli.
2. Pherekano ea POLolphthalein e nka 1G ea phenonophthalein, eketsa 100ml ea etanol ea ho qhibiliha
3. Sodium Thiolfate Thapelo (0.02MOME filthara. Taba: Nka hoo e ka bang 0.15g ea potasiamo e tloaelehileng e omisitsoeng ka li-iodium - eketsa 50m 40ml of Slulfiric acid, a sisinya ebile e thata ka thata; Kamora metsotso e 10 sebakeng se lefifi, eketsa 250ml ea metsi ho hlapolla, 'me ka sebele e nyamela e le botala e sebelisoa e le khalemelo e se nang letho. 1ml ea sodiosulfate (0.1mol / l) e lekana le 4.903g ea potasiamo dichromate. Lekala khatello ea tharollo ho latela ts'ebeliso ea tharollo le palo ea potasiamo e nkuoeng. Boikemisetso bo boholo makhetlo a 5 ho etsa mahloriso 0.02mol / l. Haeba mocheso oa kamore o kaholimo ho 25 ° C, thempereishene ea tharollo ea karabelo le metsi a ho hlapolla e lokela ho khoptjoa ho hoo e ka bang 20 ° C.
4. Khohlo ea Isch e feto-fetoha Mme e se e loketse.
Tharollo ee e lokela ho lokisoa e sa ncha pele pele e sebelisoa.
Mehato ea ts'ebetso: Nka 0.1g ea sehlahisoa sena, e behelle ka nepo, e kenye botlolo ea Distillation D, Ekelletse 10ml ea 30% (G / G) tharollo ea Caddium. Tlatsa letheba la mouoane B ka metsi ho kopaneng, 'me u hokela yuniti ea distillation. Commerse ka bobeli b le D e ka ba glycerin), etsa boemo ba metsi a oli ka botlolo ea Cadmium. Khoele ea naetrojene e kena kahare ho laola sekhahla sa eona sa ho phalla ho isa ho 1 Bubble motsotsoana. Ka hare ho metsotso e 30, phahamisa mocheso oa oa oli ho ea 1555ºC, hlakola thaema ena e aparetsoeng, eketsa 3 Marotholi a pherekano ea Phenolphthalein, 'me Timp boleng ba PH ke 6.57.1 Ho fihlela ho se na khabone ea khabone, eketsa 1.0g ea potasiamo e 1, eketsa 1ml ea sodiosulfate ntlha ea pheletso, rekota Buka ea Buka ea V2 (ML). Ka tlhahlobo e 'ngoe e se nang letho, rekota lintlha tsa VA le VB (ML) ea tharollo ea sodium ea sodium hydroxte
Nako ea ho romella: April 25-2024