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Toka Te Manawa
Ko te pH he kupu haangarau e tohu ana i te kaha hauwai, me te mahi hei mehua mo te kawatanga o te kawakore ranei o te whakakotahitanga, e tohu ana i te kukume o nga katote hydronium kei roto i te otinga.
E whakaatuhia ana he kohinga katoa i waenga i te kukume o nga katote hauwai me te taumata o te kawatanga Tuhinga o mua matūKo te waikawa kaha he nui te kaha o te katote hauwai, i te waikawa ngoikore he iti te waahanga.
Pāngarau, te pH Kua tautuhia hei logarithm decimal o te tauutuutu o te ngohe o te katote hauwai i roto i te otinga. Ko te mahi takiuru e whakamahia ana ki te whakarite i te ia, kia whai tikanga ai te tau. I whakauruhia te tauine e te kaimorihi a Sorenson, nana i tapa te pauna tae noa ki te 1924.
Ko te Ko te tauine pH kua whakaritea i waenga i te nama 0 me te 14: 0 te mutunga waikawa, 14 te mutunga o te kawakore. Ko te nama 7, te takawaenga, ko te mea e mohiotia ana ko te PH kūpapa.
Ka rite ki te mehua?
Mo te inenga pH, he maha tonu te whakamahi i te matū ngawari, ko te Pepa Litmus. He mahi tena ka rere ke tona tae ki te otinga e rumakina ai.
Ko nga matū waikawa ka huri i te pepa mawhero, a, ko nga mea tino nui ka huri i te kikorangi. Ko etahi o nga pepa o tenei momo he tohu taatai, kia taea ai e te tangata e whakamahi ana te whakawairua i te rekoata poti hauwai me te kara.
Heoi, ko te mahi a Litmus kaore i tino whai hua, a, i nga waa kaore e whai hua, he taputapu e mohiotia ana ko mita mita, he puoro i whakamahia i roto i te tikanga matū hei ine i te pH o te otinga. I reira, he kohinga mo te inenga pH kei roto i te rua o nga hiko, tetahi i hangaia mai i te calomel me tetahi atu o te karaihe: he mita hiko tonu tenei mita, ana ko nga hiko e hono atu ana ka puta he hiko i te wa e rumakina ana ki nga otinga.
He tauira o te pH o etahi matū
Te wai rēmana (pH 2) | Te wai karaka (pH 4) |
Te waipiro waipiro (PH 1) | Peera (pH 5) |
Kai horoi horoi (pH 10.5) | Amonia (PH 12) |
Te wai hopi (pH 9) | Kainga (PH 13) |
Te wai moana (pH 8) | Cola houra (pH 3) |
He wai kotakota (pH 11) | Waikawa Hydrochloric (pH 0) |
Te miraka o Magnesia (pH 10) | Pūhiko (pH 1) |
Kiri o te tangata (pH 5.5) | Sodium hydroxide (pH 14) |
Miraka (pH 6) | He wai ma (PH 7) |
Winika (pH 3) | Toto (pH 8) |
Me pehea te pupuri i te pH kia mau tonu?
I etahi wa ko te tikanga taiwhanga me whakarite me te penapena i tetahi otinga pH tonu. Ko te tiaki i tenei otinga he uaua ake i tana whakaritenga, na te mea mena ka whakapiri atu ki te hau ka ngongo te hauhā me te waikawa, mena ka penapenahia ki roto i te ipu karaihe ka kaha ake te kawakore na te paanga. Tuhinga ka whai mai.
Ko te rongoā buffer ko era e ahei ana ki te pupuri kia pumau ta ratau pH mena kei tua atu i te waahanga iti o waikawa ranei turanga kaha
Ko nga otinga o tenei momo ka rite me te waikawa ngoikore me te tote o te waikawa kotahi, ma te whakamahi ranei i te putake ngoikore me te tote o te putake ano. Ahakoa ko nga ruma kei roto i nga rauropi ora me mau tonu te tatauranga ki te pH, mo te mahi hāmama me te pūkoro.
Ka taea e koe te mahi: He Tauira mo te Waikawa me te Waikawa