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Ukuphinda usebenzise uthotho lwentsimbi | Hlaziya i-2021

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U namandla umndilili buthathaka
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


Ukuya ezantsi uye phezulu kwetafile isinyithi

  • Ukwanda kokuphinda kwenzeke kwakhona
  • Ukulahleka kwee-elektroni (oxidize) ngokulula ukwenza ii-ion ezintle
  • Yonakalisa okanye yonakalise ngokulula
  • Ifuna amandla amaninzi (kunye neendlela ezahlukeneyo) ukubekwa ecaleni kwimixube yazo
  • Yiba namandla okunciphisa iiarhente (i-electron donor).

Ukuphendula ngamanzi kunye neeasidi

Esona sinyithi sisebenzayo, njenge-sodium, siya kusabela ngamanzi abandayo ukuvelisa i-hydrogen kunye ne-hydroxide yentsimbi:

2Na + 2H2O => 2NaOH + H2

Isinyithi embindini wothotho lwentsebenzo, njengentsimbi, siyakusabela ngeasidi ezifana nesulfuric acid (kodwa hayi amanzi kubushushu obuqhelekileyo) ukunika ihydrogen kunye netyuwa yentsimbi, efana nentsimbi (II) sulfate:

U-Fe + H2SO4 => I-FeSO4 + H2

Ukuphendula okukodwa kokufuduka

Isikhonkwane sesinyithi kwisisombululo sobhedu sulphate sinokutshintsha umbala kungekudala njengoko ubhedu bentsimbi ifakwe isinyithi (II) sulphate.

UFe + CuSO4 => Cu + FeSO4

Ngokubanzi, nasiphi na isinyithi esincinci kuthotho lwentsebenzo sinokutshintshwa sisinyithi: isinyithi esiphezulu sinciphisa ion yesinyithi esezantsi. Oku kusetyenziselwa impendulo ye-thermite kwimveliso yexabiso elincinci lesinyithi kunye nokulungiselela i-titanium ngenkqubo ye-kroll (Ti iphantse ibe kwinqanaba elifanayo ne-Al kuthotho lokuphinda lusebenze). Umzekelo, i-iron (III) i-oxide incitshisiwe yenziwa ngentsimbi kunye ne-aluminium oxide eguqulweyo kule nkqubo.

2Al + Fe2O3 -> 2e + Al2O3

Ngokunjalo, ukususwa kwe-titanium kwi-tetrachloride kunokufezekiswa kusetyenziswa i-magnesium, ethi yona ekugqibeleni yenze i-magnesium chloride:

2Mg + TiCl4 => Ti + 2MgCl2

Eminye imiba inokuthi, nangona kunjalo, inokudlala njengoko i-potassium yensimbi inokulungiswa ngokunciphisa i-sodium potassium chloride ukuya kwi-850 ° C. Nangona i-sodium kwi-reactivity series ingaphantsi kwe-potassium, impendulo ingaqhubeka ekubeni i-potassium iguquguqukayo kwaye umxube udibene.

Na + KCl => K + NaCl

Ingeniso yefom yentengiso isinceda ukugcina umxholo kunye nomgangatho ophezulu Kutheni kufuneka sibeke izibhengezo? : D

Andifuni ukuxhasa iwebhusayithi (vala) - :(