Te Waikura me te Whakaiti: Ngā Kaupapa Taketake o ngā Tauhohenga Matū
Ko te waikura me te whakaiti he ariā matua e rua i roto i te matū e haere tahi ana. He mea nui ēnei huringa matū e uru ana ki te nekehanga o ngā irahiko i roto i ngā momo tukanga taiao me ngā tukanga ahumahi, tae atu ki te manawa pūtau, te tahunga wahie, me ngā tauhohenga hikohiko i roto i ngā pākahiko. Ka whakamāramahia e tēnei tuhinga ngā whakamāramatanga, te hītori, ngā tikanga, me ngā tono o te waikura me te whakaiti i roto i te huarahi whānui engari e wātea ana.
Te Whakamāramatanga o te Waikura me te Whakaiti
I te whakarapopototanga, ko te waikura e pā ana ki te ngaronga o ngā irahiko e te ngota, te ngota, te katote rānei. I tetahi atu taha, ko te whakaiti ko te whiwhinga o ngā irahiko e te ngota, te ngota, te katote rānei. He maha ngā wā ka whakarapopototia tēnei whakamāramatanga ki te "OIL RIG": Ko te Waikura he Ngaronga, ko te Whakaiti he Whiwhi.
Te waikura:
\[
\text{A} \rightarrow \text{A}^{+} + e^{-}
\]
Whakaitinga:
\[
\kāhua{B} + e^{-} \rightarrow \kāhua{B}^{-}
\]
I roto i ngā tauhohenga whakahāora-whakaiti (redox), e rua ngā wāhanga: he ākena whakahāora me he ākena whakaiti. Ko te ākena whakahāora he matū e tango ana i ngā irahiko, ā, ka whakaitihia, ko te ākena whakaiti ia he matū e ngaro ana ngā irahiko, ā, ka whakahāorahia.
Hītori o te Whakawhanaketanga Ariā
E ai ki te hītori, i whakaurua tuatahitia te ariā o te waikura i te rautau 18 e te kaipūtaiao Wīwī a Antoine Lavoisier. I kite a Lavoisier ina tauhohe ngā konganuku ki te hāora, ka hangaia he "waikura". Koinei te pūtake o te kupu "waikura". Heoi, i titoa ake te ariā o te whakaiti me tōna whanaungatanga ki te waikura e ngā kaipūtaiao pērā i a Humphry Davy rāua ko Michael Faraday i te rautau 19.
I te tau 1834, i whakamārama a Faraday ko ngā tauhohenga hikohiko i roto i ngā pūtau hiko ka puta he iahiko hiko i puta mai i te nekehanga o ngā irahiko. Nā tēnei takoha i āwhina te mārama ki te tūranga o ngā irahiko i roto i ngā tauhohenga redox.
Ngā Tikanga me ngā Mātāpono Taketake
E rua ngā haurua-tauhohenga o te tauhohenga redox: he haurua-tauhohenga waikura me te haurua-tauhohenga whakaiti. Me whakaaro tātou ki tētahi tauira noa: te tauhohenga i waenga i te konutea (Zn) me ngā katote parahi(II) (Cu^{2+}) i roto i te wairewa.
Tauhohenga Haurua o te Waikura:
\[
\text{Zn} \rightarrow \text{Zn}^{2+} + 2e^{-}
\]
Tauhohenga Whakaiti Haurua:
\[
\text{Cu}^{2+} + 2e^{-} \rightarrow \text{Cu}
\]
Ina honoa ēnei tauhohenga-haurua e rua, ka whiwhi tātou i te tauhohenga redox katoa:
\[
\kāhua{Zn} + \kāhua{Cu}^{2+} \rightarrow \kāhua{Zn}^{2+} + \kāhua{Cu}
\]
I tēnei tauhohenga, ka mahi te konutea (Zn) hei kaiwhakaiti nā te mea ka whakaratohia e ia ngā irahiko, ko ngā katote parahi ia (Cu^{2+}) hei kaiwhakahāora nā te mea ka tangohia e rātou ngā irahiko.
Ko ngā tauhohenga redox hoki e whakahaeretia ana e ngā mātāpono o te tiaki i te papatipu me te tiaki i te utu hiko. Ko te tikanga o tēnei, i roto i te tauhohenga matū, me noho pūmau te tapeke o ngā ngota me te utu.
Ngā Taupānga i roto i te Oranga o Ia Rā
He mea nui te mahi a ngā tauhohenga redox i roto i ngā āhuatanga maha o te oranga o ia rā me te ahumahi:
1. Te Manawa Pūtau: I roto i ngā rauropi ora, ko te manawa pūtau he tukanga redox e whakapūngaohia ai te hukahuka hei whakaputa pūngao i roto i te ahua o te ATP. Ko te hāora e manawahia ana e tātou ka mahi hei ākena whakapūngao, ko te hukahuka ia ka mahi hei ākena whakaiti.
2. Waikura: Ko te tukanga waikura anō hoki te pūtake o te waikura, te wāhi e tauhohe ai ngā konganuku pēnei i te rino (Fe) ki te hāora me te wai hei hanga waikura pēnei i te waikura (Fe_2O_3).
3. Ngā Pūhiko me ngā Pūtau Wahie: I roto i ngā pākahiko, ka pāngia ngā irahiko e ngā tauhohenga redox e huri ai te pūngao matū hei pūngao hiko. Hei tauira, i roto i ngā pākahiko lithium-ion, ka whai wāhi ngā irahiko lithium ki te whakawhiti i ngā irahiko i waenga i ngā irahiko pai me ngā irahiko kino mā roto i ngā tauhohenga redox.
4. Te whakaahua-ā-tinana: I roto i te ao tipu, ko te whakaahua-ā-tinana he tukanga redox e whakapūmau ai te chlorophyll i te wai hei whakaputa hāora, ā, e whakaiti ana i te hauhā waro hei kūhuka i raro i te awe o te rā.
5. Te Whakamahinga Konganuku: I roto i te umanga whakarewa, ko te tangohanga o ngā konganuku mai i ō rātou konganuku he tauhohenga redox. Hei tauira, ka tangohia te konumohe mā te electrolysis mai i te alumina (Al_2O_3), ka whakaitihia ngā katote konumohe hei hanga i te konganuku konumohe parakore.
6. Te Whakamate i te Wai: Ko te tukanga whakamate wai mā te whakamahi i te chlorine he tauhohenga redox e mahi ai te chlorine hei matū whakahāora e patu ana i ngā moroiti mate.
Te Uauatanga o te Waikura me te Whakaiti
Ahakoa he tino māmā ngā mātāpono taketake o te waikura me te whakaiti, i roto i te mahi, he tino uaua ngā tauhohenga redox. Nā te mea he maha ngā tauhohenga matū e uru ana ki ngā momo ngota neke atu i te rua, ā, ka pāngia hoki ēnei tauhohenga e ngā āhuatanga taiao pēnei i te pH me te pāmahana.
Ko te matū hiko tētahi mara e kapi ana i tēnei uauatanga, e whakamahia ai ngā tauhohenga redox hei whakaputa hiko, e whakatereterehia rānei e te iahiko hiko. Ko te pūtau hiko he tauira māmā noa iho o te tono hiko i reira ka puta he iahiko hiko nā te tūponotanga o te tauhohenga redox. Ko ngā pūtau hiko, i tētahi atu taha, ka whakamahi i te hiko hei akiaki i tētahi tauhohenga redox kore-tūponotanga.
Te Tūranga i roto i te Tiaki Taiao
Ehara i te mea he mea nui ngā tauhohenga redox i roto i ngā horopaki hangarau me ngā ahumahi anake, engari he pānga nui anō hoki ki te tiaki taiao. Hei tauira:
– Te Maimoatanga Para: He maha ngā wā ka uru atu ki ngā tukanga maimoatanga para ngā tauhohenga redox hei whakaiti i te paitini o ngā poke waro me ngā poke kore-waro.
– Te Whakaiti Tukunga: Ko te hangarau purenga hau putanga e whakamahi ana i ngā tauhohenga redox hei huri i ngā poke kino pēnei i ngā waikura hauota (NOx) me te hauhā whanariki (SO2) kia kore ai e tino kino.
– Whakaahua-whakakorikori: Ka whakamahia e te hangarau whakaahua-whakakorikori ngā haurua-ira pērā i te titanium dioxide (TiO2) hei wawahi i ngā parahanga waro i raro i te awe o te mārama UV mā roto i ngā tauhohenga redox.
Whakamutunga
E rua ngā taha o te moni kotahi te waikura me te whakaiti i roto i te matū taketake. Ko rāua te pūtake o ngā tauhohenga matū maha e tino hira ana ki te ora me te hangarau. Mai i te manawa pūtau ki te hangarau pākahiko e whakakaha ana i ā tātou taputapu matihiko, ka tukuna e ngā tauhohenga redox he māramatanga hohonu ki te taunekeneke me te huringa o ngā ngota. Ehara i te mea he mea nui noa iho te māramatanga hohonu ki ēnei tikanga mō ngā kaipūtaiao me ngā miihini engari ka āwhina hoki i a tātou ki te maioha me te tiaki i te taiao e noho nei tātou.
I te haere tonu o te hangarau me te mātauranga matū ki te ahu whakamua, ka kitea pea e tātou ētahi atu tono me ngā auahatanga e ahu mai ana i ngā mātāpono o te waikura me te whakaiti. Mā te mātauranga me te rangahau tonu, ka taea e tātou te whakanui ake i ngā painga o ngā tauhohenga redox mō te whakatairanga i te tangata.
