Sulfurous acid. Chemical Properties, samarwa

Sulphurous acid - shi ne wani m inorganic dibasic acid na matsakaici ƙarfi. M fili ne da aka sani kawai a ruwa-ruwa bayani a maida hankali ba fiye da shida da cent. A yunkurin ware tsarki sulfurous acid, shi decomposes zuwa sulfur dioxide (SO2) da kuma ruwa (H2O). Alal misali, lokacin da fallasa su sulfuric acid (H2SO4) a dabzar form cikin sodium sulfite (Na2SO3) maimakon sulfurous acid saki sulfur oxide (SO2). Ga abin da wannan dauki:

Na2SO3 (sodium sulfite) + H2SO4 (sulfuric acid) = Na2SO4 (sodium sulphate) + SO2 (sulfur dioxide) + H2O (ruwa)

A bayani na sulfurous acid

A lokacin ajiya wajibi ne don ware iska. In ba haka ba, sulfurous acid, sannu a hankali mamaye oxygen (O2), ya canza kama zuwa sulfuric.

2H2SO3 (sulfurous acid) + O2 (oxygen) = 2H2SO4 (sulfuric acid)

sulfurous acid mafita ne quite peculiar wari (wari reminiscent sauran bayan kona wasa), gaban wanda za a iya bayyana ta a gaban sulfur dioxide (SO2), ba su chemically mamaye ruwa.

Chemical Properties na sulfurous acid

1. Sulfurous acid (Formula H2SO3) za a iya amfani da rage wakili ko oxidizing wakili.

H2SO3 ne mai kyau rage wakili. Ana iya amfani da free of halogens sami halides. Ga misali:

H2SO3 (sulfurous acid) + Cl2 (chlorine gas) + H2O (ruwa) = H2SO4 (sulfuric acid) + 2HCl (hydrochloric acid)

Amma hulda da karfi rage wannan acid zai yi aiki a matsayin oxidant. An misali ne da dauki sulfuric acid tare da hydrogen sulfide:

H2SO3 (sulfurous acid) + 2H2S (sulfide) = 3S (sulfur) + 3H2O (ruwa)

2. dauke lamba sinadaran fili suranta biyu iri salts - sulfites (tsakiya) da kuma hydrosulfites (acidic). Wadannan salts ana rage jamiái, kazalika (H2SO3) sulfurous acid. A cikin oxidized form salts na sulfuric acid. Calcining sulfites aiki karfe sulfides da sulfates suna kafa. Wannan auto-hadawan abu da iskar shaka dauki, kai-waraka. Ga misali:

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

sodium da kuma potassium sulfite (Na2SO3 da K2SO3) ana amfani da dyeing yadi yadudduka, karafa a cikin bleaching, kazalika da hotunan. Alli hydrogen sulfite (Ca (HSO3) 2), wanda wanzu ne kawai a cikin bayani, da ake amfani da sarrafa itacen abu a cikin wani musamman sulfite ɓangaren litattafan almara. Daga shi sai ku yi takarda.

A amfani da sulfurous acid

Sulfurous acid da aka yi amfani da:

- for bleaching ulu, siliki, itace ɓangaren litattafan almara, takarda da sauran irin wannan abubuwa ba tsayayya bleaching ta amfani da wani karfi oxidants (msl, chlorine).

- kamar yadda a hana aifuwa na maza da kuma wani maganin antiseptik, msl, domin hana fermentation na hatsi a cikin shiri na sitaci ko a hana fermentation a ruwan inabi ganga.

- da adana abinci, kamar canning kayan lambu da 'ya'yan itãce;

- a cikin aiki da itace kwakwalwan kwamfuta na itace a cikin sulfite angaren litattafan almara, daga wanda sa'an nan sami takardar. A wannan yanayin, wani bayani da alli sulfite (Ca (HSO3) 2), wanda dissolves da lignin - musamman abu da ta ɗaure da cellulose zaruruwa.

Sulfurous acid: Shiri na

Wannan acid iya samu ta hanyar rushe sulfur dioxide (SO2) a cikin ruwa (H2O). Kana bukatar sulfuric acid a dabzar form (H2SO4), jan (Cu) da kuma bututu. A algorithm ne:

1. Hankali zuba tube a mayar da hankali sulphurous acid sa'an nan su sanya wani yanki na tagulla. Heat. Wadannan dauki auku:

Cu (jan) + 2H2SO4 (sulfuric acid) = CuSO4 (sulphate sulfur) + SO2 (sulfur dioxide) + H2O (ruwa)

2. A sulphurous gas rafi ya kamata a directed cikin wani vial da ruwa. Lokacin da shi dissolves jera auku a sinadaran dauki da ruwa, wadda aka kafa a sakamakon sulfurous acid:

SO2 (sulfur dioxide) + H2O (ruwa) = H2SO3

Kamar wancan ne, wucewa sulfur dioxide ta cikin ruwa, yana yiwuwa a sami sulfurous acid. Yana da daraja idan akai la'akari da cewa gas irritates da rufi na Airways iya sa ta kumburi, kuma asarar ci. Tare da dogon lokacin da inhalation na ta yiwu asarar sani. Saduwa da gas bukatar da matuqar kula da hankali.