Video: Dab tsi yog pH ntawm aqueous tov nrog hydrogen ion concentration?
2024 Tus sau: Miles Stephen | [email protected]. Kawg hloov kho: 2023-12-15 23:36
Dab tsi yog qhov pH ntawm a daws nrog hydrogenion concentration ntawm 10^-6M? pH yog qhov ntsuas ntawm H + ion concentration → qhov siab dua H + ionconcentration , qhov qis dua pH (piv txwv li ze rau 0) thiab acidic ntau dua daws . Li no lub pH ntawm daws yog 6, i.e. tsis muaj zog acidic.
Hauv qhov no, dab tsi yog hydrogen ion concentration ntawm kev daws nrog pH?
Ua li no, pH yog txiav txim los ntawm hydrogen - ion concentration . Nyob rau hauv cov ntaub ntawv ntawm ib tug nruab nrab daws , [H+]=10-7,v npe a pH ntawm 7. Qhov no txhais tau tias, piv txwv li, tias a hydrogen - ion concentration ntawm kev daws nrog a pH ua 4o10-4mol / l, lub ntsiab lus nws muaj 0.0001 mol ntawm hydrogen ions hauv a daws ntawm 1 liter.
Ib yam li ntawd, pH ntawm cov kua dej aqueous yog dab tsi? Cov pH ntawm cov tshuaj aqueous yog nyob ntawm qhov pH scale uas feem ntau yog li ntawm 0 txog 14 hauv dej (txawm hais tias raws li tau tham hauv qab no tsis yog ib txoj cai lij choj). A pH ntawm 7 yog suav tias yog nruab nrab. A pH ntawm tsawg dua 7 yog suav tias yog acidic. A pH ntawm ntau dua 7 ces suav tias yog qhov yooj yim.
Ntxiv mus, hydrogen ion concentration yog dab tsi?
Kev txhais ntawm hydrogen - ionconcentration : cov concentration ntawm hydrogen ions nyob rau hauv kev daws teeb meem qhia feem ntau nyob rau hauv moles ib liter los yog nyob rau hauv pH units thiab siv raws li ib tug ntsuas ntawm acidity ntawm cov tshuaj qhia dyes fornarrow ranges ntawm hydrogen - ionconcentration.
Puas yog pH nyob ntawm qhov concentration?
HYDROGEN ION CEEB TOOM THIAB pH pH Yog li ntawd txhais tau tias yog lub logarithm mus rau lub hauv paus 10 ntawm cov reciprocal ntawm hydrogen ion concentration los yog tus nqi tsis zoo ntawm lub logarithm rau lub hauv paus 10 ntawm hydrogen ion concentration . Nws ua raws li no hais tias: Aneutral tov muaj a pH ua 7.0.
Pom zoo:
Dab tsi yog Qhov Ib Feem Cuam Tshuam ntawm cov khoom hydrogen hauv cov methane ch4 yog dab tsi?
Cov feem pua ntawm cov ntsiab lus los ntawm Element Element Symbol Mass Percent Hydrogen H 25.132% Carbon C 74.868%
Yuav ua li cas tshwm sim thaum aqueous tov ntawm sodium sulphate thiab barium chloride sib tov?
Thaum cov tshuaj aqueous ntawm sodium sulphate reacts nrog ib tug aqueous tov ntawm barium chloride, precipitate ntawm barium sulphate yog tsim thiab tom qab cov tshuaj tiv thaiv tshwm sim. ii. Yog hais tias cov reactants nyob rau hauv lub cev muaj zog, ces cov tshuaj tiv thaiv yuav tsis tshwm sim. Nws yog ib qho kev hloov pauv ob npaug nrog rau nag lossis daus
Dab tsi yog qhov sib npaug ionic rau cov tshuaj tiv thaiv ntawm aqueous lead II nitrate nrog aqueous sodium bromide?
Cov tshuaj tiv thaiv ntawm aqueous sodium bromide thiab aqueous lead (II) nitrate yog sawv cev los ntawm qhov sib npaug net ionic equation. 2Br−(aq)+Pb2+(aq) →PbBr2(s) 2 B r − (a q) + P b 2 + (a q) → P b B r 2 (s)
Puas muaj zog electrolyte nyob rau hauv aqueous tov?
Nyob rau hauv ib tug aqueous tov ib tug muaj zog electrolyte yog suav tias yog kiag li ionized, los yog dissociated, nyob rau hauv dej, lub ntsiab lus nws yog soluble. Cov acids muaj zog thiab cov hauv paus feem ntau yog cov muaj zog electrolytes. Feem ntau cov soluble ionic tebchaw thiab ob peb molecular tebchaw yog cov muaj zog electrolytes
Dab tsi yog qhov flux los ntawm lub voos xwmfab ntawm sab yog tias tus nqi ntawm Q yog ntawm ib qho ntawm nws lub ces kaum?
Raws li peb paub tias, tag nrho cov flux los ntawm tus nqi q yog q / ε 0 (Gauss txoj cai). Yog hais tias tus nqi yog nyob rau ntawm lub ces kaum ntawm lub voos xwmfab, ib co ntawm cov flux nkag mus rau hauv lub voos xwmfab thiab tawm los ntawm ib co ntawm nws lub ntsej muag. Tab sis qee qhov flux tsis nkag mus rau hauv lub voos xwmfab. Qhov 1/8th no yuav muab faib ua 3 ntu dua