Sọlfọ dioxide. Formula, inweta, chemical Njirimara

Oxide sọlfọ (sọlfọ dioxide, sọlfọ dioxide, sọlfọ dioxide) - bụ a colorless gas na-enwe a na-ejikarị nkọ e ji mara isi (isi yiri ihe ìhè ọkụ). Gasị nrụgide na ụlọ okpomọkụ. Sọlfọ dioxide bụ soluble na mmiri, si otú akpụ ejighị n'aka na igirigi ibu sulphuric acid. Ọzọkwa, a umi na-etisasịwo na igirigi ibu sulphuric acid na ethanol. Nke a bụ otu n'ime isi mmiri nke mejupụtara nke mgbawa ugwu gas.

Ka kwadebere sọlfọ dioxide

Nkwadebe SO2 - sọlfọ dioxide - ulo oru na usoro mejupụtara na-ere ọkụ na sọlfọ ma ọ bụ amịkpọ nke sulfides (pyrite na-bụ-eji).

4FeS2 (pyrite) + 11O2 = 2Fe2O3 (ígwè oxide) + 8SO2 (sọlfọ dioxide).

Na laabu ọnọdụ, sọlfọ dioxide pụrụ inweta site n'oru nke ike asịd hydrosulfites na sulfites. N'ihi ya dapụtara sulfurous acid ozugbo erekasịchaala ka mmiri na sọlfọ dioxide. Dị ka ihe atụ:

Na2SO3 (sodium sulfite) + H2SO4 (na igirigi ibu sulphuric acid) = Na2SO4 (sodium sulphate) + H2SO3 (sulfurous acid).
H2SO3 (sulfurous acid) = H2O (mmiri) + SO2 (sọlfọ dioxide).

The atọ usoro nke na-amị sọlfọ dioxide na-gụrụ lekwasị na igirigi ibu sulphuric acid site kpo oku na a na-erughị ifịk ọla. Dị ka ihe atụ: Cu (ọla kọpa) + 2H2SO4 (na igirigi ibu sulphuric acid) = CuSO4 (ọla kọpa sulfate) + SO2 (sọlfọ dioxide) + 2H2O (mmiri).

Chemical Njirimara nke sọlfọ dioxide

The usoro nke sọlfọ dioxide - SO3. Nke a ihe onwunwe akọ acidic oxides.

1. The sọlfọ dioxide dissolves na mmiri, si otú akpụ sulphurous acid. Na nkịtị ọnọdụ, nke a na mmeghachi omume bụ reversible.

SO2 (sọlfọ dioxide) + H2O (mmiri) = H2SO3 (sulfurous acid).

2. alkalis sọlfọ dioxide akpụ sulfite. Dị ka ihe atụ: 2NaOH (sodium hydroxide) + SO2 (sọlfọ dioxide) = Na2SO3 (sodium sulfite) + H2O (mmiri).

3. Chemical sọlfọ gas ọrụ bụ zuru ezu elu. The kasị akpọ Mbelata Njirimara nke sọlfọ dioxide. Na ndị dị otú ahụ Jeremaya mere ogo sọlfọ ọxịdashọn na-abawanye. Dị ka ihe atụ: 1) SO2 (sọlfọ dioxide) + Br2 (bromine) + 2H2O (mmiri) = H2SO4 (na igirigi ibu sulphuric acid) + 2HBr (hydrogen bromide); 2) 2SO2 (sọlfọ dioxide) + O2 (oxygen) = 2SO3 (sulfite); 3) 5SO2 (sọlfọ dioxide) + 2KMnO4 (potassium permanganate) + 2H2O (mmiri) = 2H2SO4 (na igirigi ibu sulphuric acid) + 2MnSO4 (manganese sulphate) + K2SO4 (potassium sulfate).

Ikpeazụ nzaghachi - otu ihe atụ nke a elu-edu omume SO2 na SO3. Purple achagharị emee) ngwọta.

4. Na usoro nke ọnụnọ nke ike mbenata sọlfọ dioxide pụrụ igosipụta oxidizing Njirimara. Dị ka ihe atụ, iji wepụ na Metallurgical ụlọ ọrụ sọlfọ si flue, haruru, iji reconstitution nke sọlfọ dioxide na carbon monoxide (CO): SO2 (sọlfọ dioxide) + 2CO (carbon monoxide) = 2CO2 (carbon dioxide) + S (sọlfọ).

Ọzọkwa oxidative Njirimara nke a umi na-eji iji nweta fosfornovaristoy ksiloty: PH3 (phosphine) + SO2 (sọlfọ dioxide) = H3PO2 (fosfornovaristaya acid) + S (sọlfọ).

Ebe eji sọlfọ dioxide

N'ozuzu na sọlfọ dioxide a na-iji na-emepụta na igirigi ibu sulphuric acid. Ọzọkwa ọ na-eji dị ka a ihe eji egbochi mmebi (E-220) na imewe nke mmanya ọtọ bịrịbịrị (wine na ndị ọzọ na-aṅụ nkezi price Atiya). N'ihi na ihe onwunwe nke a gas igbu a dịgasị iche iche nke microorganisms, ha fumigated n'ụlọ nkwakọba na akwukwo nri ụlọ ahịa. Ke adianade do, sọlfọ dioxide na-eji maka bleaching ajị, silk, ahịhịa (ndị ihe nke ike-chaa na chlorine). Na laboratories nke sọlfọ dioxide a na-eji dị ka ihe mgbaze na iji nweta dị iche iche salts nke sulfurous acid.

n'ahụ mmetụta

Sọlfọ dioxide nwere ike na-egbu egbu Njirimara. Mgbaàmà nke nsi - a ụkwara, runny imi, hoarseness, a peculiar uto ke inua, a siri ike otighiti na akpịrị. Inhalation nke sọlfọ dioxide na elu kasịnụ ebilite ike ilo anwụrụ, okwu aghara, ọgbụgbọ na vomiting nwere ike ịzụlite nnukwu akpa ume edema.

MPC nke sọlfọ dioxide:
- n'ime ụlọ - 10 mg / m³;
- nkezi kacha ọrụ-na ikuku - 0,05 mg / m³.

Uche na sọlfọ dioxide na onye ụmụ mmadụ, osisi na ụmụ anụmanụ dị iche iche. Ka ihe atụ, n'etiti ndị kasị na-eguzogide ọgwụ osisi birch na oak, na ọ dịghị ihe ọzọ - spruce na pine.