Okwu mmalite nke ph mita

Nkọwa nke mita ph

Igwe pH na-ezo aka na ngwa eji achọpụta uru pH nke ngwọta.Igwe pH na-arụ ọrụ na ụkpụrụ nke batrị galvanic.Ike electromotive dị n'etiti abụọ electrodes nke galvanic batrị dabeere na iwu Nerns, nke na-abụghị nanị ihe jikọrọ ya na Njirimara nke electrodes, kamakwa metụtara ịta nke hydrogen ions na ngwọta.Enwere njikọ kwekọrọ n'etiti ike electromotive nke batrị bụ isi na mkpokọta hydrogen ion, na logarithm na-adịghị mma nke mkpokọta ion hydrogen bụ uru pH.Mita pH bụ ngwa nyocha a na-ahụkarị, nke a na-ejikarị arụ ọrụ ugbo, nchekwa gburugburu ebe obibi na ụlọ ọrụ.Ala pH bụ otu n'ime ihe ndị dị mkpa bụ isi nke ala.Ihe ndị dị ka okpomọkụ na ike ionic nke ngwọta a ga-anwale kwesịrị ịtụle n'oge nha pH.

Ụkpụrụ nke ph mita

A kọwapụtara pH dị ka logarithm na-adịghị mma nke ntinye ion hydrogen na ngwọta mmiri.Ọ bụ ezie na nke a na-ada mgbagwoju anya, n'okwu dị mfe, pH bụ ọnụ ọgụgụ a na-eji akọwapụta acidity ma ọ bụ alkalinity nke ngwọta.Ọnụọgụ ahụ na-egosi ọnụọgụ ion hydrogen nke otu ihe nwere ike ịhapụ na ngwọta.Na pH nso, a na-ewere pH nke 7 na-anọpụ iche.A na-ewere ngwọta nwere pH nke 0-7 dị ka acidic, na ngwọta n'elu 7 ruo 14 ka a na-akpọ ngwọta alkaline.Na usoro ndu, pH dị oke egwu.N'ihi pH ejiri nlezianya gbanwee, ọtụtụ biomolecules dị n'ahụ anyị nwere ike ịrụ ọrụ magburu onwe ya.Ọbụna na usoro nnwale, a ga-edobe pH achọrọ iji nweta nsonaazụ ziri ezi.Ya mere, na nyocha nke ndu, a na-eji ngwaọrụ a na-akpọ pH mita iji nlezianya nyochaa pH.

Mita pH bụ electrode na-anabata pH nke na-atụ ọrụ ion hydrogen na ngwọta ma na-ebufe ozi a.Ngwaọrụ ahụ nwere tubes iko abụọ, nke ọ bụla n'ime ha nwere electrode, electrode ntụaka na electrode sensọ.A na-eme electrode ntụaka nke ngwọta KCl juputara, ebe electrode sensọ nwere ngwọta nchekwa nwere pH nke 7, na waya ọlaọcha nke ejiri ọlaọcha chloride kpuchie na-emikpu na ngwọta abụọ a.N'ọgwụgwụ nke ihe mmetụta electrode bụ bọlbụ nke iko nwere porous nke ejiri silica na nnu ígwè kpuchie ya.

Iji tụọ pH nke ngwọta, pH mita na-emikpu na ngwọta.Mgbe bọlbụ nke electrode sensọ na-akpọtụrụ ngwọta ahụ, ions hydrogen na ngwọta ga-anọchi ions ígwè na bọlbụ ahụ.Ngbanwe a nke ion ọla na-eme ka mmiri na-asọba na waya igwe, nke voltmeter na-agụ.

Igwe pH bụ otu n'ime akụrụngwa a na-ejikarị eme ihe na ụlọ nyocha ihe ndụ.Nyochaa oge niile pH nke ihe nchekwa, ngwọta na reagents iji hụ na ọnọdụ nnwale ahụ ziri ezi.Iji hụ na agụmagụ ziri ezi, a ga-ahazirịrị ngwa ahụ mgbe niile.

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