Sulfurous acid. Chemical ehupfumi, kugadzira

Sulphurous asidhi - ane kusagadzikana inorganic dibasic asidhi kuti unosvikirwa simba. Kuputsika remubatanidzwa anozivikanwa chete aqueous mhinduro pane wevasungwa vasina zvinopfuura matanhatu muzana. Mukuedza kuti wakachena sulfurous asidhi patsanura, izvozvo uchiora kuti nesarufa yakasviba (SO2) uye mvura (H2O). Somuenzaniso, kana kuratidzwa sulfuric asidhi (H2SO4) mu pfungwa yokushanda muchimiro kupinda yavaibvisa sulfite (Na2SO3) pane sulfurous asidhi akasunungura sarufa oxide (SO2). Heunoi sei ichi:

Na2SO3 (sodium sulfite) + H2SO4 (sulfuric acid) = Na2SO4 (sodium sulphate) + SO2 (sarufa yakasviba) + H2O (mvura)

A mhinduro kubva sulfurous asidhi

Panguva okuchengetera Panotoda asava mhepo. Zvikasadaro, sulfurous acid, zvishoma nezvishoma rokutora okisijeni (O2), tinoshandurirwa sulfuric.

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

sulfurous asidhi zvingaitwa chaizvo chairwo kunhuwa (kwakanaka nowenyika asara pashure rinopfuta machisi), kuvapo izvo zvinogona kutsanangurwa nokuvapo nesarufa yakasviba (SO2), havasi mishonga vakasungwa mvura.

Chemical ehupfumi kuti sulfurous asidhi

1. Sulfurous asidhi (Formula H2SO3) angashandiswa sezvo kuderedza mumiririri kana oxidizing mumiririri.

H2SO3 zvakanaka achidzikisa zvaanoda. Rinogona kushandiswa isina halogens vanogamuchira halides. Somuenzaniso:

H2SO3 (sulfurous acid) + Cl2 (kuiisa chlorine gasi) + H2O (mvura) = H2SO4 (sulfuric acid) + 2HCl (hydrochloric acid)

Asi kukurukurirana pamwe simba achidzikisa asidhi iyi achaita somunhu oxidant. Muenzaniso zvakaitwa sulfuric asidhi pamwe rehydrogen sulfide:

H2SO3 (sulfurous acid) + 2H2S (sulfide) = 3S (sarufa) + 3H2O (mvura)

2. Kukurukurwa kuonana kwemakemikari remubatanidzwa kaviri siyana munyu - sulfites (pakati) uye hydrosulfites (acidic). munyu aya yokuderedza nevasori, uyewo (H2SO3) sulfurous acid. In kwavo oxidized chimiro munyu pamusoro sulfuric acid. Calcining sulfites vanoshingaira sulfides simbi uye sulfates vari aumba. Izvi car-oxidation maitiro, nokuzvidzora zvokuporesa. Somuenzaniso:

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

yavaibvisa uye potassium sulfite (Na2SO3 uye K2SO3) zvinoshandiswa kudhaya Whitehead Textile akamendwa nesimbi iri bleaching uyewo mifananidzo. Karusiyamu rehydrogen sulfite (Ca (HSO3) 2), rinongowanika riri mhinduro, rinoshandiswa nokuti processing huni acho kuva rinokosha sulfite pulp. Kubva zvino kuti mapepa.

Kushandiswa sulfurous asidhi

Sulfurous asidhi inoshandiswa:

- nokuti bleaching shinda, sirika, huni pulp, bepa nezvimwe zvakafanana zvinhu regai kurwa bleaching vachishandisa oxidants simba (semuenzaniso, kuiisa chlorine);

- sezvo zvisaora uye akambozvishandisa kuuraya utachiona, semuenzaniso, nokuti kutadzisa chinovira dzezviyo kwegadziriro starch kana kuti kudzivirira chinovira mu emiti waini;

- kuti ndichengetedze zvokudya, zvakadai canning muriwo nemichero;

- iri kubudiswa danda Chips huni ari sulfite pulp, umo gamuchirai pepa. Muchiitiko chino, mhinduro calcium sulfite (Ca (HSO3) 2), iro urwa kuti lignin - a fuma chaiyo runosunganidza cellulose fibers.

Sulfurous asidhi: Kugadzirira

asidhi Izvi zvinogona kuwanikwa Kuparadzwa sarufa yakasviba (SO2) mumvura (H2O). Unofanira sulfuric asidhi iri kuramba chimiro (H2SO4), mhangura (cu) uye chubhu. The algorithm ndiko:

1. Nyatsogovera dira chubhu iri kuramba sulphurous asidhi uye kuisa chimedu mhangura. Heat. Zvinotevera kuita kunoitika:

Bv (mhangura) + 2H2SO4 (sulfuric acid) = CuSO4 (sulphate sarufa) + SO2 (sarufa yakasviba) + H2O (mvura)

2. sulphurous gasi Rwizi inofanira kuendeswa kuva chinu nemvura. Kana urwa pamwe kunoitika makemikari maitiro nemvura, iyo yakaumbwa somugumisiro sulfurous asidhi:

SO2 (sarufa yakasviba) + H2O (mvura) = H2SO3

Saka, anopfuura nesarufa yakasviba nomumvura, zvinokwanisika nokugamuchira sulfurous acid. Zvinokosha kufunga kuti gasi zvinoshatirisa lining pakati Airways zvingakonzera kuzvimba kwayo, uye kurasikirwa kudya. With-refu inhalation zvayo inobvira kurasikirwa chavanoziva. Contact pamwe gasi kudiwa pamwe chakazara kunyatsotarisirwa.