Acid Nitrous. Vailaau ma meatotino faaletino

acid Nitrous - a acid monobasic vaivai, lea e mafai ona ola na o fofo aqueous faavaivaia ma lanu moana i le pepa faatumu kasa. nitrite Ua taʻua lea o le masima po o nitrite. O i latou o oona ma sili atu ona mautu nai lo le acid lava ia. O le vailaau fuafaatatau o lenei mea e faapea: HNO2.

meatotino faaletino:
1. vaega tele gao o 47 g / mol.
2. O le mamafa molecular aiga o 27 amu
3. Density e 1.6.
4. O le manatu faaliusuavai e 42 tikeri.
5. O le pupuna tulaga o 158 tikeri.

meatotino vailaau o acid nitrous

1. Afai e faamafanafana se fofo acid nitrous, o le a le tali vailaau nei:
3HNO2 (acid nitrous) = HNO3 (acid nitric) + 2NO (oxide nitric ua faamalolo o ni kasa) + H2O (le vai)

2. dissociates ma faigofie displaced le fofo aqueous mai le masima o acids malosi:
H2SO4 (acid sulfuric) + 2NaNO2 (nitrite sodium) = Na2SO4 (sulphate sodium) + 2HNO2 (acid nitrous)

3. O le mataupu e mafai ona tatou uma se oxidizing ma faaitiitia meatotino. Ina ua faailoa i se sui malosi oxidizing (mo se faataitaiga, chlorine, H2O2 peroxide hydrogen, potassium permanganate) ua oxidized e acid nitric (i nisi o tulaga i le faavaega o masima nitric acid):

Faaitiitia meatotino:

HNO2 (acid nitrous) + H2O2 (peroxide hydrogen) = HNO3 (acid nitric) + H2O (le vai)
HNO2 + Cl2 (chlorine) + H2O (vai) = HNO3 (acid nitric) + 2HCl (acid hydrochloric)
5HNO2 (acid nitrous) + 2HMnO4 = 2Mn (NO3) 2 (manganese nitrate, masima acid nitric) + HNO3 (acid nitric) + 3H2O (le vai)

meatotino Oxidizing:

2HNO2 (acid nitrous) + 2HI = 2NO (okesene oxide, i se kasa) + I2 (vaimū) + 2H2O (le vai)

Sauniuniga o nitrite

e mafai ona maua lenei mea i le tele o auala:

1. Ina ua faataapeina oxide nitric (III) i le vai:

N2O3 (oxide nitrogen) + H2O (vai) = 2HNO3 (acid nitrous)

2. Ina ua faataapeina oxide nitric (IV) i le vai:
2NO3 (nitrogen oxide) + H2O (vai) = HNO3 (acid nitric) + HNO2 (acid nitrous)

Faaaoga o acid nitrous:
- diazotizing amines autu o ituaiga laau manogi;
- tuuina atu o masima diazonium;
- i le tuufaatasia o le tuufaatasi faatulagaina (f.t.t., mo le tuuina atu o dyes faatulagaina).

Aafia i acid nitrous i tino

O le aano o le oona, ei ai se aafiaga susulu mutagenic, e pei ona moni o sui sooupu deaminated.

O le a le nitrites

Nitrite - o masima eseese o acid nitrous. K i le vevela e itiiti le fale o manu nai lo nitrates. Manaomia i le gaosia o nisi dyes. Faaaogaina i vailaau.

O le taua patino e nitrite sodium maua tagata. O lenei mea ua i ai le NaNO2 fuafaatatau. O le faaaogaina o le faasaoina o meaai i le gaosiga o meaai i le gaosia o oloa mai iʻa ma aano o manu. O se efuefu papae mama po teisi samasama. nitrite Sodium hygroscopic (vagana ai le nitrite sodium faamamaina) ma lelei faataapeina i H2O (le vai). I le ea e mafai ona ia oxidize faasolosolo nitrate sodium, ua i ai se meatotino faaitiitia malosi.

o loo faaaogaina nitrite Sodium i:
- vailaau tuufaatasia: ina ia maua se tuufaatasi amine diazo e deactivate azide sodium sili e maua le okesene, nitrogen oxide, sodium ma sodium, mo le mitiia o karaponi carbon;
- o Oloa Gaosia o meaai (faʻaopoopoga meaai E250) e avea o se antioxidant ma se sui sooupu antibacterial;
- Fausiaina: o anitifirisi faʻaopoopoga e fausaga sima i le gaosia o oloa fausia ma, i le tuufaatasia o le tuufaatasi faatulagaina e pei inhibitor corrosion ea, i le gaosia o rubbers, poppers, fofo faaopoopo mo mea papa; ina ua faatatauina le uamea e aveesea ai le vaega apa ma mo phosphating;
- i le ata: o se antioxidant ma a reagent;
- i paiolo ma vailaau: a vasodilator, antispasmodic, laxative, bronchodilator; e avea o se vaifofo mo le faaleagaina manu po cyanides tagata.

E nei faaaogaina foi e isi masima o acid nitrous (f.t.t., nitrite potassium).