Sodium bicarbonate, foromo ea limolek'hule ke NAHCO₃，ke motsoako o sa tsitsang, o nang le phofo e tšoeu ea kristale, ha e na monko, e letsoai, e bonolo ho qhibiliha metsing.Butle-butle e bola moeeng o mongobo kapa moeeng o chesang, e hlahise carbon dioxide, 'me e chese ho fihlela ho 270 ° C e bola ka ho feletseng.Ha e le asiti, e bola ka matla, e hlahise carbon dioxide.
Sodium bicarbonate e sebelisoa haholo mabapi le tlhahlobo ea k'hemistri, inorganic synthesis, tlhahiso ea indasteri, tlhahiso ea temo le leruo la liphoofolo.
Lintho tsa 'mele:sodium bicarbonateke kristale e tšoeu, kapa likristale tse opaque monocliplative ke likristale tse nyane, tse sa nkhang hamonate, tse letsoai hanyenyane ebile li pholile, 'me li qhibiliha habonolo metsing le glycerin,' me ha li qhibilihe ka ethanol.Thesolubility ka metsing ke 7.8g (18℃), 16.0g (60 ℃), density ke 2.20g/cm3, karolo ke 2.208, refractive index ke α: 1.465;β: 1,498;γ: 1.504, entropy e tloaelehileng 24.4J / (mol · K), e hlahisa mocheso 229.3kj / mol, mocheso o qhibilihisitsoeng 4.33kj / mol, le ho feta matla a chesang (Cp) 20.89J / (mol · ° C) (22 ° C) .
Lintho tsa lik'hemik'hale:
1. Acid le alkaline
Tharollo ea metsi ea sodium bicarbonate e fokola ka alkaline ka lebaka la hydrolysis: HCO3-+H2O⇌H2CO3+OH-, 0.8% tharollo ea metsi pH boleng ke 8.3.
2. Itšoare ka asiti
Sodium bicarbonate e ka sebetsana le asiti, joalo ka sodium bicarbonate le hydrochloride: nahco3+HCL = NaCl+CO2 ↑+H2O.
3. Karabelo ho alkali
Sodium bicarbonate e ka sebetsana le alkaline.Ka mohlala, sodium bicarbonate le sodium hydroxide reaction: nahco3 + naOh = Na2CO3 + H2O;le liketso tsa calcium hydroxide, haeba palo ea sodium bicarbonate ea sodium e tletse, ho na le: 2NAHCO3 + CA (OH) 2 = CACO3 ↓+NA2CO3 + 2H2O;
Haeba ho na le sodium bicarbonate e nyenyane, ho na le: Nahco3+CA (OH) 2 = CACO3 ↓+Naoh+H2O.
4. Karabelo ho letsoai
A. Sodium bicarbonate e ka etsa hydrolysis habeli ka aluminium chloride le aluminium chloride, 'me ea hlahisa aluminium hydroxide, letsoai la sodium le carbon dioxide.
3AHCO3+AlCl3 = Al (OH) 3 ↓+3ACL+3CO2 ↑;3AHCO3+Al (CLO3) 3 = Al (OH) 3 ↓+3AClo3+3CO2 ↑.
B. Sodium bicarbonate e ka itšoara ka litharollo tse itseng tsa letsoai la tšepe, tse kang: 2HCO3-+Mg2+= CO2 ↑+MgCo3 ↓+H2O.
5. Ho bola ka mocheso
Sebopeho sa sodium bicarbonate se tsitsitse mochesong, 'me ho bonolo ho senya.E senyeha ka potlako ka holimo ho 50 ° C. Ka 270 ° C, carbon dioxide e lahleheloa ka ho feletseng.Ha ho na phetoho moeeng o omileng 'me butle-butle e senyeha moeeng o mongobo.Decomposition The reaction equation: 2NAHCO3NA2CO3+CO2 ↑+H2O.
Sebaka sa kopo:
1. Tšebeliso ea laboratori
Sodium bicarbonatee sebelisoa e le li-reagents tsa tlhahlobo hape e sebelisoa bakeng sa inorganic synthesis.E ka sebelisoa ho lokisa tharollo ea sodium carbonate-sodium bicarbonate buffer.Ha o eketsa palo e nyane ea asiti kapa alkali, e ka boloka mahloriso a li-ion tsa haedrojene ntle le liphetoho tse kholo, tse ka bolokang boleng ba pH ba sistimi bo batla bo tsitsitse.
2. Tšebeliso ea indasteri
Sodium bicarbonate e ka sebelisoa ho hlahisa litima-mollo tsa pH le litima-mollo tse foam, le sodium bicarbonate indastering ea rabara e ka sebelisoa bakeng sa tlhahiso ea rabara le seponche.Sodium bicarbonate indastering ea metallurgical e ka sebelisoa e le ntho e qhibilihisang bakeng sa ho akhela li-ingots tsa tšepe.Sodium bicarbonate indastering ea mechini e ka sebelisoa e le mothusi oa ho bopa bakeng sa lehlabathe la tšepe (li-sandwich).Sodium bicarbonate indastering ea khatiso le ho daea e ka sebelisoa e le sesebelisoa sa ho lokisa mebala, buffer ea acid-base, le sesebelisoa sa ho daea se ka morao sa kalafo ka ho hatisa khatiso;ho eketsa soda ho daea ho ka thibela gauze ka gauze.Thibelo.
3. Tšebeliso ea ho lokisa lijo
Ha ho etsoa lijo, sodium bicarbonate ke ntho e hlephileng e sebelisoang ka ho fetisisa e sebelisoang ho hlahisa libisikiti le bohobe.Mmala o mosehla-sootho.Ke carbon dioxide ka senoeng sa soda;e ka kopanngoa le alum ho alkaline phofo e lomositsoeng, kapa e ka etsoa ka citromes e le alkali ea majoe a sechaba;empa hape e le moemeli oa ho boloka botoro.E ka sebelisoa e le moemeli oa mebala ea litholoana le meroho ts'ebetsong ea meroho.Ho eketsa hoo e ka bang 0.1% ho isa ho 0.2% ea sodium bicarbonate ha u hlatsoa litholoana le meroho ho ka tsitsisa botala.Ha sodium bicarbonate e sebelisoa e le moemeli oa phekolo ea litholoana le meroho, e ka eketsa boleng ba pH ba litholoana le meroho ka ho pheha litholoana le meroho, e ka eketsang boleng ba pH ba litholoana le meroho, ea ntlafatsa ho boloka metsi a protheine, ho khothalletsa ho nolofatsa. ea lisele tsa lisele tsa lijo, 'me a qhale likarolo tsa astringent.Ho phaella moo, ho na le phello ea lebese la poli, ka palo ea tšebeliso ea 0.001% ~ 0.002%.
4. Temo le leruo la liphoofolo
Sodium bicarbonatee ka sebelisoa bakeng sa ho inela temong, hape e ka etsa hore ho be le khaello ea lysine lijong.Soluble sodium bicarbonate ka tekanyo e nyane ea metsi kapa e tsoakoa ka har'a concentrate ho fepa nama ea khomo (chelete e nepahetseng) ho khothaletsa kholo ea nama ea khomo.E ka boela ea eketsa haholo tlhahiso ea lebese ea likhomo tsa lebese.
5. Tšebeliso ea bongaka
Sodium bicarbonate e ka sebelisoa e le thepa e tala bakeng sa meriana, e sebelisetsoang ho alafa asiti e feteletseng ea gastric, chefo ea metabolic acid, hape e ka boela ea e-ba le moroto oa alkaline ho thibela majoe a uric acid.E ka boela ea fokotsa chefo ea liphio ea lithethefatsi tsa sulfa, 'me ea thibela hemoglobin ho kenya ka har'a renal tubular ha a hlobaetsang le hemolysis,' me a tšoara matšoao a bakoang ke asiti e feteletseng ea gastric;ente ka methapo ha e tobane le chefo ea lithethefatsi Phello ea kalafo.Hlooho e sa khaotseng, ho lahleheloa ke takatso ea lijo, ho nyekeloa ke pelo, ho hlatsa, joalo-joalo.
Tlhokomeliso ea polokelo le lipalangoang: Sodium bicarbonate ke sehlahisoa se seng kotsi, empa se lokela ho thibeloa ho tloha mongobo.Boloka ka tanka e ommeng ea moea.U se ke ua kopanya le asiti.Soda ea ho baka e jeoang ha ea lokela ho tsoakoa le lintho tse chefo ho thibela tšilafalo.
Ho paka: 25KG / BAG
Nako ea poso: Mar-17-2023