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Sulfurous acid. izakhiwo Chemical, ukukhiqizwa

Sulphurous acid - kuyinto engazinzile wezinto dibasic acid wamandla ophansi. kwakwakhe Fragile waziwa kuphela isixazululo aqueous lokuhlushwa kungekho isenti engaphezu kweyisithupha ngayinye. Ezama ukwehlukanisa okumsulwa sulfurous acid, sekubola ukuba sulphur dioxide (SO2) namanzi (H2O). Ngokwesibonelo, lapho zihlatshwa sulfuric acid (H2SO4) e ifomu kanzulu ku sodium sulfite (Na2SO3) esikhundleni sulfurous acid ezikhishwe sulphur oxide (SO2). Nakhu okunjena:

Na2SO3 (i-sodium sulfite) + H2SO4 (sulfuric acid) = Na2SO4 (i-sodium sulphate) + SO2 (sulphur dioxide) + H2O (amanzi)

Isixazululo of sulfurous acid

Phakathi isitoreji kuyadingeka ukuba ngakususi emoyeni. Kungenjalo, sulfurous acid, kancane iyavuleka mpilo (O2), siguqulelwa sulfuric.

2H2SO3 (sulfurous acid) + O2 (i-oksijini) = 2H2SO4 (sulfuric acid)

sulfurous acid izixazululo abasakwazi eyinqaba iphunga (iphunga okusikhumbuza ezisele ngemuva komdlalo evutha), khona lapho zingachazwa ngezinqubo khona i-sulphur dioxide (SO2), akuzona amakhemikhali amanzi lesibopho.

izakhiwo Chemical ka sulfurous acid

1. Sulfurous acid (Formula H2SO3) ungasetshenziswa njenge-ejenti ekunciphiseni noma i-ejenti oxidizing.

H2SO3 eyisidalwa esinenkululeko ezinhle ukunciphisa. Ingasetshenziselwa mahhala halogens ukuthola halides. Ngokwesibonelo:

H2SO3 (sulfurous acid) + Cl2 (chlorine igesi) + H2O (amanzi) = H2SO4 (sulfuric acid) + 2HCl (hydrochloric acid)

Kodwa ukuxhumana nge eqinile ekunciphiseni lesi acid uyokwenza njengenhlangano oxidant. Isibonelo zisabela kanjani sulfuric acid ne-hydrogen sulfide:

H2SO3 (sulfurous acid) + 2H2S (sulfide) = bo-3 (sulphur) + 3H2O (amanzi)

2. Kubhekwe contact chemical kwakwakhe yakha ezimbili izinhlobo nosawoti - sulfites (phakathi) kanye hydrosulfites (esidi). Lezi nosawoti abanciphisa ejenti, kanye (H2SO3) sulfurous acid. Ngesimo yabo oxidized nosawoti ka-sulfuric acid. Calcining sulfites asebenzayo metal sulfides nama-sulfate akhiwa. Cishe le ndlela yokusabela ngokuzenzakalela namachibi, self-ukuphulukiswa. Ngokwesibonelo:

4Na2SO3 (i-sodium sulfite) = Na2S (i-sodium sulfide) + 3Na2SO4 (i-sodium sulfate)

sodium ne-potassium sulfite (Na2SO3 futhi K2SO3) asetshenziswa ukudaya yendwangu izindwangu, insimbi le amakhorali kanye nezithombe. Calcium hydrogen sulfite (Ca (HSO3) 2), ongagcini kuphela isixazululo, isetshenziselwa kucutshungulwa impahla izinkuni zibe sulfite uginindela ekhethekile. Kusukela ke wenze iphepha.

Ukusetshenziswa sulfurous acid

Sulfurous acid isetshenziswa:

- I-amakhorali uvolo, usilika, ukhuni uginindela, iphepha kanye nezinye izinto ezifanayo musa ukumelana mhlophe usebenzisa oxidants eqinile (isb, chlorine);

- ukuvimbela ukubola kokudla kanye isinqandakuvunda, isib, ukuvimbela ukuvutshelwa zokusanhlamvu ukulungiswa isitashi noma ukuvimbela ukuvutshelwa ewayinini imiphongolo;

- ukuze kulondolozwe ukudla, ezifana ukuwafaka imifino nezithelo;

- e ukucutshungulwa chips izinkuni izinkuni e uginindela sulfite, okuvela kulo ke ukuthola iphepha. Kulokhu, isixazululo nge-calcium sulfite (Ca (HSO3) 2), okuyinto kuyasiqeda lignin - isakhi esithile esikhethekile sibopha kwezintambo zesivikelo sesifuba cellulose.

Sulfurous acid: Ulungiselela

Le asidi angatholakala Ukuqedwa sulphur dioxide (SO2) emanzini (H2O). Udinga i-sulfuric acid e ifomu kanzulu (H2SO4), i-copper (Cu) kanye tube. I algorithm:

1. uthele ngokucophelela tube e kanzulu sulphurous acid bese ukubeka ucezu wethusi. Heat. Eyasabela ngayo kwenzeka:

Cu (ithusi) + 2H2SO4 (sulfuric acid) = CuSO4 (sulphate sulphur) + SO2 (sulphur dioxide) + H2O (amanzi)

2. Ukusakaza igesi sulphurous kufanele iqondiswe ku umfuma ngamanzi. Lapho ancibilikisa ngokwengxenye kwenzeka ukusabela chemical ngamanzi, kwakheka ngenxa sulfurous acid okuyinto:

SO2 (sulphur dioxide) + H2O (amanzi) = H2SO3

Ngakho, wedlula sulphur dioxide ngokusebenzisa amanzi, kungenzeka ukuthola sulfurous acid. It kuyafaneleka ukucabangela ukuthi igesi luthinta ulwelwesi lwesisu, kwenze yomoya kungadala ukuvuvukala yayo, futhi angafuni kudla. Nge ephefumula kwesikhathi eside ukulahlekelwa kwayo kungenzeka ukwazi. Xhumana ne isidingo igesi ngokukhulu ukucophelela kanye ukunakwa.

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