Video: Yuav ua li cas koj txiav txim siab yog hais tias ib yam khoom yog acidic los yog yooj yim?
2024 Tus sau: Miles Stephen | [email protected]. Kawg hloov kho: 2023-12-15 23:36
Rau txiav txim seb ib yam khoom puas yog acid ora ua puag , suav cov hydrogens ntawm txhua yam khoom ua ntej thiab tom qab cov tshuaj tiv thaiv. Yog tus naj npawb ntawm hydrogenshasdecreased qhov khoom yog cov kua qaub (dawb hydrogen ions). Yog tus naj npawb ntawm hydrogens tau nce qhov khoom yog cov puag (lees txais hydrogenions).
Ib yam li ib tug yuav nug, koj ua li cas txiav txim siab seb qhov kev daws yog acidic lossis yooj yim?
A daws nrog pH ntawm 7 yog classifiedasneutral. Yog pH qis dua 7, lub kev daws teeb meem . Thaum pH siab tshaj 7, lub daws yog yooj yim . Cov lej no piav qhia txog qhov concentration ntawm hydrogenions hauv lub daws thiab nce nyob rau hauv ib tug negativelogarithmicscale.
Qhov thib ob, ua li cas koj thiaj paub yog tias ntsev yog acidic lossis yooj yim? Cov pH ntawm cov tshuaj qhia txog qhov concentration ntawm H3O + ions. pH tsawg dua 7 qhia tau hais tias ib qho acidic tov, apHgreater dua 7 qhia a yooj yim kev daws, thiab pH ntawm 7 qhia txog kev daws teeb meem nruab nrab. Acid ntsev ua acidic kev daws teeb meem thiab yooj yim ntsev ua yooj yim kev daws teeb meem.
Yog li ntawd, koj yuav txiav txim siab li cas yog tias cov kua qaub muaj zog lossis tsis muaj zog?
Yog hais tias acid tsis tau teev nyob ntawm no, nws yog ib tsis muaj zog acid . Nws yuav yog 1% ionized los yog 99% ionized, tab sis nws tseem cais raws li a qaug zog acid . Ib qho kua qaub uas dissociates 100% rau hauv ions yog hu ua a muaj zog acid . Yog nws tsis dissociate 100%, nws yog a qaug zog acid.
Puas yog LiOH yog cov kua qaub lossis lub hauv paus?
Tsis yog, LiOH yog ib tug muaj zog puag , zoo li theotheralkali hauv paus . Nws yog me ntsis qaug zog dua hauv paus zoo liNaOHthough, vim nws yog enthalpy ntawm tsim yog txawv. Itsconjugate kua qaub , Li+, tuaj yeem ua raws li Lewis tsis muaj zog kua qaub.
Pom zoo:
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