Tsev > Xov xwm > Ntsiab lus

Potassium Humate Cov Qauv Ntsuas

Hauv kev tshawb xyuas chemistry hauv cov sodium hydroxide thiab potassium hydroxide feem ntau siv los ntawm kev sib hloov. Tab sis qee qhov kev siv, lawv hloov tsis tau. Xws li hydrogen generator, teev muaj potassium hydroxide. Kev kho mob sodium txiv qaub, tau teev nrog sodium hydroxide. Sodium hydroxide hygroscopic dua potassium hydroxide yog ib qho muaj zog, yog li ntawd cov potassium hydroxide los siv tshuaj tsom feem ntau. Nyob rau hauv tib txoj kev yog tias koj siv nws raws li ib tug desiccant nrog sodium hydroxide. Piv txwv, yog tias koj hais tias kev kho mob sodium txiv qaub, qhia nrog sodium hydroxide. Tab sis ob ntawm sodium hydroxide kom pheej yig dua tus nqi, thaum nws muaj peev xwm hloov tau sodium hydroxide.

Ob ntawm lawv yog corrosive heev thiab yuav tsum tsis txhob nyob rau hauv kev sib cuag nrog hlau ntim, thiab lawv yuav tsum tau muab kaw thiab khaws cai. Tsis muaj qhov txawv ntawm lawv.

Lub cev nqaij daim tawv ntawm sodium hydroxide:

Tib khoom yog xim tsis tshua siv lead ua xim, txhuam sib luag 2.130, melting point yog 318.4 ℃. Lub hau npau ntawm 1390 ℃. Caustic soda lag luam yog ib qho khoom thiab kua ob: kua dawb huv caustic soda, blocks, ntawv, pas nrig, ntau ntau heev, txhaws heev. Ntshiab kua caustic dej qab zib yog xim tsis tshua xim. Khoom cua caustic dej qab zib muaj lub zog hygroscopicity. Nws yog soluble hauv dej, thiab thaum nws yog yaj, nws yog alkaline heev thiab muaj kev xav ntawm greasy. Soluble nyob ethanol thiab glycerin; Nws tsis yog soluble hauv acetone thiab ether. Nws yog corrosive thiab muaj corrosive nyhuv on fiber, daim tawv nqaij, iav thiab ceramics. Dismutation cov tshuaj tiv thaiv nrog chlorine, bromine, iodine thiab lwm yam halogens; Lub ntsev thiab dej yog tsim los ntawm lub taub dej ntawm acids.

Lub cev nqaij daim tawv ntawm cov kua tshuaj carbon dioxide:

Cov xim dawb rhombic, cov khoom muaj xim dawb los yog teeb pom kev zoo los yog sib koom ua ke. Tus cwj pwm sib luag 2.044 (20 ℃), qhov taw qhia moj zuag yog 360.4 ℃. Lub hau npau ntawm 1320 ~ 1324 ℃. Cov dej hauv dej, yaj thaum tso tawm ntau cov dej sov, muaj dej txaus, tuaj yeem nqus dej noo thiab cua ntswj, thiab maj mam nqus carbon dioxide rau hauv khib nyiab. Soluble nyob ethanol, me ntsis soluble hauv ether. Muaj zog alkali thiab corrosive, nws cov khoom yog zoo li cov neeg ntawm cov caustic dej qab zib.

Cov ntsiab lus: yog qhov tau hais txog 1.5 g, soluble hauv 40 ml dej kub thiab txias, txias rau 15 ℃, nrog cov tshuaj phenolphthalein (TS - 167) ntau ntau, nrog 1 mol / L acid titration. Thaum paj liab ploj, sau cov kua qaub qaub, ntxiv cov tshuaj methyl txiv kab ntxwv tshuaj (TS-148), thiab ntxiv titration kom txog thaum lub paj liab tas li. Sau tag nrho ntim ntawm cov kua qaub uas yuav tsum tau ua rau titration. Txhua Ml ntawm 1mol / L ntawm sulfuric acid yog sib npaug rau 56.11mg ntawm tag nrho cov alkalinity (KOH).