Sulfurous acid. Chemical Njirimara, mmepụta

Sulphurous acid - bụ ejighị n'aka inorganic dibasic acid nke usoro ike. Na-emebi emebi compound mara naanị na okenye ihe ngwọta na a ịta nke ọ bụla ihe karịrị isii pasent. Na mgbalị na-anọrọ ọcha sulfurous acid, ọ erekasịchaala ka sọlfọ dioxide (SO2) na mmiri (H2O). Ka ihe atụ, mgbe ọ gụrụ na igirigi ibu sulphuric acid (H2SO4) na itinye ụdị n'ime sodium sulfite (Na2SO3) kama sulfurous acid tọhapụrụ sọlfọ oxide (SO2). Ebe a bụ ihe a mmeghachi omume:

Na2SO3 (sodium sulfite) + H2SO4 (na igirigi ibu sulphuric acid) = Na2SO4 (sodium sulphate) + SO2 (sọlfọ dioxide) + H2O (mmiri)

A ngwọta nke sulfurous acid

Mgbe nchekwa dị mkpa ewepu ikuku. Ma ọ bụghị ya, sulfurous acid, ji nwayọọ nwayọọ na-adọrọ oxygen (O2), ghọọ igirigi ibu sulphuric.

2H2SO3 (sulfurous acid) + O2 (oxygen) = 2H2SO4 (na igirigi ibu sulphuric acid)

sulfurous acid ngwọta bụ nnọọ peculiar isi (isi reminiscent fọdụrụ mgbe ọkụ egwuregwu), ọnụnọ nke nwere ike kọwara site ọnụnọ nke sọlfọ dioxide (SO2), na-adịghị na ya ibikwa mmiri.

Chemical Njirimara nke sulfurous acid

1. Sulfurous acid (Formula H2SO3) nwere ike mee ka ndị na mbenata gị n'ụlọnga ma ọ bụ oxidizing n'ụlọnga.

H2SO3 bụ ezi mbenata n'ụlọnga. Ọ ga-eji free of halogens enweta halides. Dị ka ihe atụ:

H2SO3 (sulfurous acid) + Cl2 (chlorine gas) + H2O (mmiri) = H2SO4 (na igirigi ibu sulphuric acid) + 2HCl (hydrochloric acid)

Ma mmekọrịta siri ike na mbenata a acid ga-eme ihe dị ka ihe oxidant. Otu ihe atụ bụ mmeghachi omume nke na igirigi ibu sulphuric acid na hydrogen sulfide:

H2SO3 (sulfurous acid) + 2H2S (sulfide) = 3S (sọlfọ) + 3H2O (mmiri)

2. Weere kọntaktị chemical compound Nleta abụọ iche iche nke salts - sulfites (n'etiti) na hydrosulfites (acidic). Ndị a salts na-eme mmadụ, nakwa dị ka (H2SO3) sulfurous acid. Na ha oxidized ụdị salts nke na igirigi ibu sulphuric acid. Calcining sulfites ifịk metal sulfides na sulfates ii. Nke a na akpaaka-ọxịdashọn mmeghachi omume, onwe-agwọ ọrịa. Dị ka ihe atụ:

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

sodium na potassium sulfite (Na2SO3 na K2SO3) na-eji dyeing akwa akwa, ọla na bleaching nakwa dị ka foto. Calcium hydrogen sulfite (Ca (HSO3) 2), bụ nke dị naanị na ngwọta, na-eji maka nhazi osisi ihe onwunwe n'ime a pụrụ iche sulfite pulp. Site na ya mgbe ahụ ka akwụkwọ.

The ojiji nke sulfurous acid

Sulfurous acid a na-eji:

- n'ihi na bleaching ajị, silk, osisi pulp, akwụkwọ na ndị ọzọ yiri bekee adịghị idi bleaching eji a ike oxidants (e.g., chlorine);

- dị ka a ihe eji egbochi mmebi na ihe antiseptik, e.g., maka egbochi gbaa ụka nke ọka na njikere nke starch ma ọ bụ iji gbochie gbaa ụka na wine orù;

- maka ichebe na nri, dị ka canning inine na mkpụrụ osisi;

- ke nhazi nke osisi ibe nke osisi na sulfite pulp, site na nke ahụ na-enweta akwụkwọ. Na nke a, a ngwọta nke calcium sulfite (Ca (HSO3) 2), nke dissolves na lignin - a pụrụ iche umi nke jikọrọ cellulose emep uta eri.

Sulfurous acid: Nkwadebe nke

Nke a acid nwere ike enwetara site dissolving sọlfọ dioxide (SO2) na mmiri (H2O). Ị mkpa na igirigi ibu sulphuric acid na lekwasị ụdị (H2SO4), ọla kọpa (Cu) na tube. The algọridim bụ:

1. Jiri nlezianya wụsa tube na itinye sulphurous acid na mgbe ebe a mpempe ọla kọpa. Okpomọkụ. Ndị na-esonụ omume na-adị:

Cu (ọla kọpa) + 2H2SO4 (na igirigi ibu sulphuric acid) = CuSO4 (sulphate sọlfọ) + SO2 (sọlfọ dioxide) + H2O (mmiri)

2. The sulphurous gas stream kwesịrị ikpegara n'ime otu mkpọ na mmiri. Mgbe ọ dissolves obere emee a chemical mmeghachi omume na mmiri, nke na-kpụrụ dị ka a n'ihi nke sulfurous acid:

SO2 (sọlfọ dioxide) + H2O (mmiri) = H2SO3

N'ihi ya, na-agafe sọlfọ dioxide site na mmiri, ọ bụ omume na-enweta ndị na sulfurous acid. Ọ bụ uru na-ewere na ndị gas wutere lining nke karị nwere ike ime ka ya mbufụt, na ọnwụ nke agụụ. Na ogologo oge inhalation nke ya na o kwere omume na ọnwụ nke nsụhọ. Kpọtụrụ na gas mkpa na ike na-elekọta ma na anya.