Isikhangiso

Ukwenza kabusha uchungechunge lwensimbi | Vuselela ngo-2021

Amathuluzi okuchaza ukuthi kwenzeka kanjani ukusabela kwamakhemikhali

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Izindaba kuphela u-5% wabantu BONKE abazokwazi

Isikhangiso

Strong Isilinganiso ebuthakathaka
Li K Ba Ca Na Mg Al Mn Zn Cr Fe Co2+ Ni Sn Pb Fe3+/ Fe H Cu Fe3+/ Fe2+ Hg Ag Hg2+ Pt Au


Ukusuka ezansi kuye phezulu kwetafula izinsimbi

  • Khulisa ekusebenzeni kabusha
  • Ukulahlekelwa ama-electron (oxidize) kalula ukwakha ama-ion amahle
  • Konakalisa noma ungcolise kalula
  • Dinga amandla athe xaxa (nezindlela ezahlukahlukene) ukuze zihlukaniswe nezinhlanganisela zazo
  • Yibani ama-ejenti anciphisa amandla (abaxhasi be-electron).

Ukusabela ngamanzi nama-asidi

Izinsimbi ezisebenza kahle kakhulu, njenge-sodium, zizosabela ngamanzi abandayo ukukhiqiza i-hydrogen ne-hydroxide yensimbi:

2Na + 2H2O => 2NaOH + H2

Izinsimbi eziphakathi kochungechunge lwe-reactivity, njenge-iron, zizosabela ngama-acid afana ne-sulfuric acid (kepha hhayi amanzi emazingeni okushisa ajwayelekile) ukunikeza i-hydrogen kanye nosawoti wensimbi, njenge-iron (II) sulfate:

Fe + H2SO4 => I-FeSO4 + H2

Ukusabela okukodwa kokuhamba

Isipikili sensimbi esixazululweni sethusi sulphate kungekudala singashintsha umbala njengoba ithusi lensimbi limbozwe nge-iron (II) sulphate.

Fe + CuSO4 => Cu + FeSO4

Ngokuvamile, noma yiziphi izinsimbi ezingaphansi kochungechunge lwe-reactivity zingashintshwa ngensimbi: izinsimbi eziphakeme zinciphisa ama-ion ensimbi aphansi. Lokhu kusetshenziselwa ukuphendula kwe-thermite ekukhiqizeni amanani amancane wensimbi yensimbi nokulungiselela i-titanium ngenqubo ye-kroll (I-Ti icishe ifane nezinga elilinganayo ne-Al ochungechungeni lwe-reactivity). Isibonelo, i-iron (III) oxide incishisiwe yaba yinsimbi ne-aluminium oxide iyaguqulwa kule nqubo.

2Al + Fe2O3 -> 2Fe + Al2O3

Ngokunjalo, ukususwa kwe-titanium ku-tetrachloride kungatholakala kusetshenziswa i-magnesium, ekugcineni eyakha i-magnesium chloride:

2Mg + TiCl4 => Ti + 2MgCl2

Kodwa-ke, ezinye izinto zingasebenza njengoba i-potassium yensimbi ingalungiswa ngokunciphisa i-sodium potassium chloride ibe ngu-850 ° C. Yize i-sodium ochungechungeni lwe-reactivity ingaphansi kwe-potassium, ukusabela kungaqhubeka njengoba i-potassium iguquguquka futhi ingxube ifakiwe.

Na + KCl => K + NaCl

Izikhangiso ze-Income form zisisiza ukuthi sigcine okuqukethwe okunekhwalithi ephezulu kakhulu kungani sidinga ukubeka izikhangiso? : D

Angifuni ukusekela iwebhusayithi (vala) - :(