Dab tsi yog lub hauv paus muaj zog tshaj ntawm pH nplai?
Dab tsi yog lub hauv paus muaj zog tshaj ntawm pH nplai?

Video: Dab tsi yog lub hauv paus muaj zog tshaj ntawm pH nplai?

Video: Dab tsi yog lub hauv paus muaj zog tshaj ntawm pH nplai?
Video: Saib Mis paub Poj niam (hluas nkauj) tus yam ntxwv lub siab 2024, Kaum ib hlis
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Cov hauv paus muaj zog muaj pH siab heev, feem ntau yog li 12 txog 14. Cov piv txwv zoo ntawm cov hauv paus muaj zog muaj xws li caustic soda lossis sodium. hydroxide (NaOH), nrog rau lye lossis potassium hydroxide (KOH). Hydroxides ntawm alkali lossis Group 1 hlau yog feem ntau muaj zog hauv paus.

Ntxiv mus, dab tsi yog pH ntawm lub hauv paus muaj zog?

Nyob rau hauv cov lus technical, cov kua qaub uas dissociates tag nrho rau hauv H + ions hauv dej yuav muaj qhov qis tshaj pH tus nqi, thaum lub puag dissociates kiag li rau hauv OH- ions hauv dej yuav muaj siab tshaj plaws pH tus nqi. Kho kom raug: Muaj zog tshaj acid muaj pH ntawm 1 thaum lub hauv paus muaj zog muaj pH ntawm 14.

Kuj Paub, dab tsi yog qhov muaj zog acid nyob rau hauv pH nplai? Carborane superacids yuav suav hais tias yog lub ntiaj teb muaj zog tshaj solo kua qaub Raws li fluoroantimonic kua qaub Qhov tseeb yog qhov sib xyaw ntawm hydrofluoric kua qaub thiab antimony pentafluoride. Carborane muaj ib pH tus nqi -18.

Ntawm no, qhov twg yog lub hauv paus muaj zog?

Cov hydroxide ion yog cov lub hauv paus muaj zog ua tau nyob rau hauv aqueous daws, tab sis hauv paus nyob nrog muaj zog ntau dua li muaj nyob hauv dej. Superbases muaj txiaj ntsig zoo hauv kev sib xyaw ua ke ntawm cov organic thiab yog qhov tseem ceeb rau lub cev organic chemistry. Superbases tau piav qhia thiab siv txij li xyoo 1850s.

Puas yog pH ntawm 11 lub hauv paus muaj zog?

Cov ntaub ntawv nrog a pH ntawm 0 txog 6 yog suav tias yog cov kua qaub, thaum cov khoom nrog a pH ntawm 8 txog 14 yog suav tias yog a puag . A pH ntawm 7 yog nruab nrab. Ib qho nrog a pH ntawm 13 lossis 15 yuav yog a lub hauv paus muaj zog . Ib qho nrog a pH ntawm 8 lossis 9 yuav tsis muaj zog puag.

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