Waihā Amphoteric - te āhua rua o te mea

He waihā e ariu ki waikawa me turanga, i runga i nga tikanga rānei. E huaina ēnei pūhui whakaahua āhua rua waihā amphoteric. E hanga e ratou i te māraa ļa whakarewa me te katote waihā, me te nga turanga katoa. Ko te kaha ki te mahi rite ki te waikawa me turanga riro anake aua waihā e roto i roto i to ratou hanganga taua konganuku :. Kia, Zn, Al, Pb, SN, Ga, Cd, Fe, Kr (III), etc. I kite i te Periodic Pūnaha D. I. Mendeleyev, waihā ki te hanga i te konganuku āhua rua e ko tata ki te-konganuku kore. Kei te whakapono te reira e taua huānga he puka whakawhiti, me te wehenga i runga i te konganuku me nonmetals pai te noho.

waihā Amphoteric He totoka matū paura minita tioata e he tino maha ma Whaitae kore e memeha i roto i te wai, me te paku conductive (electrolytes ngoikore). Heoi, etahi o enei turanga taea te rewa i roto i te waikawa me te kawakore. Dissociation "hononga rua" i roto i te wairewa waiwai puta i te momo waikawa-turanga. Ko e tika ana ki te meka i te kaha pupuri i waenganui i nga ngota whakarewa me te hāora (moku D) i waenganui i te hāora me te hauwai ngota, me (G - H) tenei e tata rite, i.e. Ahau - e - N. reira, ka kia pakaru enei mekameka i te wa ano, me enei matū -dissotsiirovat + tīhiko H me OH- tīhiko.

Whakaū i te āhua rua o enei pūhui ka amphoteric waihā - Kia (OH) _2. A feruri i te pāhekoheko o te teriuma waihā ki te waikawa me te turanga.

1. Kia (OH) ₂ + 2HCl -BeCl ₂ + 2H ₂ O.

2. Kia (OH) ₂ + 2KOH - K ₂ [Kia (OH) _4] - pāhare pāporo tetragidroksoberillat.

I roto i te take tuatahi, e te tauhohenga neutralization wahi, te hua o nei ko te hanganga o te tote, me te wai. I roto i te take tuarua, ko te hua tauhohe ko te pūhui matatini. Ko neutralization tauhohenga angamaheni mo te katoa, kaore he aweretanga, waihā, engari te pāhekoheko ki āhuatanga rite anake hoki amphoteric. e kitea ana, me te tahi atu pūhui amphoteric āhuatanga rua pērā - waikura konganuku ratou, kua hanga e ratou.

Ko āhuatanga o nga turanga katoa Ētahi āhuatanga matū o taua waihā:

1. whāwehe, hua tauhohe Thermal - te waikura hāngai me te wai: Kia (OH) ₂ -VeO + H ₂ O.

2. Ko te tauhohenga neutralization ki waikawa.

3. Reaction ki waikura waikawa.

He tika ano hoki te reira ki te mahara e reira he matū kore e e taunekeneke waihā amphoteric, i.e. he tauhohenga matū e kore e haere, te mea te reira:

1. -Konganuku kore;
2. konganuku;
3. turanga rewakore;
4. waihā Amphoteric.
5. tote toharite.

E whiwhi ēnei pūhui e precipitating te rongoā tote alkali ōrite:

BeCl ₂ 2KOH + - Kia (OH) ₂ + 2KCl.

Tai o etahi āhuatanga i roto i te tauhohenga ki te hanga i te hydrate, nga āhuatanga o e tata whai e o te āhua rua o waihā. Ratou ki nga āhuatanga rua o te wahi turanga o nga kohuke i roto i te puka, me te e puta fakanatula (bauxite, goethite, me ētahi atu).

Ko te kupu, waihā amphoteric - he taonga kohuke, i runga i te āhua o te taonga e tomo ratou i roto i te tauhohe, e taea te mahi kia rite ki nga turanga waikawa ranei. Nuinga o ngā wā hāngai ratou waikura amphoteric kei roto konganuku hāngai (ZnO-Zn (OH) _2; BeO - Kia (OH) _2), me ētahi atu).