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Ndinaya
Ndị PH bụ ngọngọ nke na -anọchite anya ike hydrogen, ma na -arụ ọrụ dị ka tụọ acidity ma ọ bụ alkalinity nke a mgbasa, na -egosi mkpokọta nke ion hydronium dị na ngwọta.
E gosiputara ya enwere njikọ zuru oke n'etiti mkpokọta nke ion hydrogen na ọkwa nke acidity nke a umiAcid siri ike nwere nnukwu ion hydrogen, ebe acid na -adịghị ike nwere obere ihe.
Na mgbakọ na mwepụ, ndị PH A kọwapụtara ya dị ka logarithm ntụpọ nke mmeghachi omume nke hydrogen ion na ngwọta. A na -eji arụ ọrụ logarithm edozie usoro a na -emekarị, ka ọnụọgụ ahụ nwee ihe ọ pụtara n'onwe ya. Onye na -ahụ maka kemistụ Sorenson webatara ọnụ ọgụgụ ahụ, onye nyere ọkwa ahụ aha ya ruo 1924.
Ndị A na -ahazi pH n'etiti nọmba 0 na 14: 0 bụ njedebe acid, ebe 14 bụ njedebe alkaline. Nọmba 7, nke dị n'etiti, bụ ihe a maara dị ka pH na -anọpụ iche.
Dị ka tụrụ?
Maka nha pH, a na-ejikarị kemịkalụ dị mfe iji, nke bụ Akwụkwọ litmus. Ọ bụ ọrụ na ọ na -agbanwe agba ya dabere na ngwọta nke a mikpuru n'ime ya.
Ihe kachasị acidic ga -atụgharị akwụkwọ ahụ ka ọ bụrụ pink, ebe ihe ndị bụ isi ga -eme ka ọ na -acha anụnụ anụnụ. Ụfọdụ akwụkwọ nke ụdị a nwere akara dị larịị, nke mere na onye ọ bụla na -eji ya nwere ike were ụcha wepu ọkwa ike hydrogen.
Agbanyeghị, ọrụ Litmus anaghị arụcha nke ọma, na ebe ọ na -adịghị arụ ọrụ, ngwaọrụ akpọrọ mita pH, ihe mmetụta eji na usoro kemịkalụ iji tụọ pH nke ihe ngwọta. N'ebe ahụ, sel maka nha pH nwere otu ụzọ elektrọnị, nke e ji calomel mee nke ọzọ bụ iko: mita a bụ voltmeter nke nwere mmetụta dị nro, na electrode ejikọrọ na ya ga -ewepụta ọkụ eletrik mgbe emikpuru n'ime ngwọta.
Ihe atụ nke pH nke ihe ụfọdụ
Ihe ọ Lemụ Lemụ lemon (pH 2) | Ihe ọ juiceụ Oụ oroma (pH 4) |
Ihe ọ juiceụ Gụ gastric (pH 1) | Beer (pH 5) |
Ihe nchacha (pH 10.5) | Amonia (pH 12) |
Mmiri ncha (pH 9) | Ịcha ọcha (pH 13) |
Mmiri mmiri (pH 8) | Cola soda (pH 3) |
Mmiri lime (pH 11) | Mmiri hydrochloric (pH 0) |
Mmiri ara ehi Magnesia (pH 10) | Batrị (pH 1) |
Akpụkpọ ahụ mmadụ (pH 5.5) | Sodium hydroxide (pH 14) |
Mmiri ara ehi (pH 6) | Mmiri dị ọcha (pH 7) |
Mmanya (pH 3) | Ọbara (pH 8) |
Kedu ka esi edobe pH mgbe niile?
Mgbe ụfọdụ usoro nyocha ahụ na -achọ ịkwadebe na ịchekwa ngwọta ya pH mgbe niile. Ichekwa ihe ngwọta a siri ike karịa nkwadebe ya, n'ihi na ọ bụrụ na ọ banye na ikuku, ọ ga -amịkọrọ carbon dioxide ma ọ ga -adị acidic, ebe ọ bụrụ na echekwara ya na akpa iko ọ ga -abụ alkaline karịa n'ihi mmetụta ya. ewezuga ya na iko.
Ndị ihe ngwọta echekwa bụ ndị nwere ike ime ka pH ha kwụsie ike megide mgbakwunye obere ntakịrị asịd ma ọ bụ ntọala dị ike.
A na -eji ngwọta na -adịghị ike na nnu nke otu acid akwadebe ihe ngwọta nke ụdị a, ma ọ bụ site na iji ntọala adịghị ike na nnu nke otu ntọala. Ọbụna mkpụrụ ndụ ihe dị ndụ ga -ejigide pH ha na -adịkarị, maka arụ ọrụ enzymatic na usoro metabolic.
Ọ nwere ike ijere gị ozi: Ihe Nlereanya nke Acids na Bases