Video: Yuav siv pH scale li cas?
2024 Tus sau: Miles Stephen | [email protected]. Kawg hloov kho: 2023-12-15 23:36
Cov pH ntsuas yog siv txhawm rau txheeb xyuas cov ntsiab lus ntawm acidity los yog hauv paus (alkalinity). Txij li thaum nplai yog nyob ntawm pH tus nqi, nws yog logarithmic, txhais tau tias hloov ntawm 1 pH unit sib raug mus rau kaum-fold hloov hauv H + pib superscript, ntxiv rau, kawg superscript ion concentration.
Tsis tas li ntawd, pH siv li cas?
Nws yog siv hauv ntau daim ntawv thov. Piv txwv li, lub pas dej da dej yuav tsum tau saib xyuas tas li los ntawm kev txheeb xyuas nws pH . Yog tias cov dej dhau los ua acidic lossis yooj yim dhau, cov tshuaj acidic lossis cov tshuaj yooj yim yuav tsum tau ntxiv rau hauv cov dej kom sib npaug ntawm H + ions thiab OH- ions. pH kuj tseem ceeb heev thaum nws los txog rau lub cev.
Tsis tas li ntawd, pH nplai siv los ntsuas acidity li cas? Cov pH ntsuas thaj tsam ntawm 0 mus rau 14. Lub pH ntawm kev daws yog ib ntsuas ntawm nws acidity los yog alkalinity (puag). Koj muaj tej zaum siv litmus daim ntawv, daim ntawv uas tau kho nrog ib tug natural water-soluble dye thiaj li ua tau siv as a pH qhia, to xeem npaum li cas kua qaub los yog puag (alkalinity) muaj nyob rau hauv ib qho kev daws.
Ib yam li ntawd, pH nplai ua haujlwm li cas?
Ib yam khoom uas tsis yog acidic lossis yooj yim yog nruab nrab. Cov pH ntsuas ntsuas seb acidic los yog ib qho tseem ceeb npaum li cas. Cov pH ntsuas thaj tsam ntawm 0 mus rau 14. Lub pH ntsuas yog logarithmic thiab yog li ntawd, txhua tus tag nrho pH tus nqi qis dua 7 yog kaum npaug acidic dua li tus nqi siab dua tom ntej.
Vim li cas pH nplai tseem ceeb?
pH yog tseem ceeb vim hais tias cov khoom xws li peb lub plab acids yuav nyob ntawm ib yam pH txhawm rau ua haujlwm kom raug. pH kuj yog tseem ceeb vim hais tias nws yuav tsum nyob rau ntawm tej theem thiaj li muaj sia nyob. Tsim ib qho loj pH ntsuas (ob lossis peb meters ntev).
Pom zoo:
Yuav siv cov hlau nplaum li cas los siv lub teeb pom kev zoo?
Yog tias koj txuas ob qhov kawg ntawm cov xaim mus rau lub teeb pom kev zoo thiab tsim lub voj kaw, ces qhov tam sim no tuaj yeem ntws. Lub coiled hlau ua zoo li ib pab pawg ntawm cov xov hlau, thiab thaum lub magnetic teb dhau los ntawm nws, ib qho tam sim no ntws los ntawm txhua kauj, tsim kom muaj zog ntau dua li koj tuaj yeem nrog cov xaim ncaj
Thaum twg koj yuav tsum siv cov haujlwm series koj siv nws li cas?
Nws yog siv los txiav txim siab cov khoom ntawm ib qho kev hloov pauv, uas yog hlau A yuav hloov lwm cov hlau B hauv kev daws yog tias A siab dua hauv koob. Kev ua yeeb yam ntawm qee cov hlau ntau dua, teev nyob rau hauv qhov kev txiav txim qis ntawm reactivity
Yuav ua li cas cov khoom siv caj ces hauv txhua lub xov tooj tshiab tsim los ntawm kev faib tawm ntawm tes sib piv nrog cov khoom siv caj ces hauv lub xov tooj qub?
Mitosis tshwm sim nyob rau hauv ob lub nuclei uas zoo tib yam rau thawj nucleus. Yog li, ob lub hlwb tshiab tsim tom qab kev faib tawm ntawm tes muaj tib yam khoom siv caj ces. Thaum lub sij hawm mitosis, chromosomes condense los ntawm chromatin. Thaum saib nrog lub microscope, chromosomes pom nyob rau hauv lub nucleus
Yuav ua li cas tshwm sim rau ib tug ionic siv lead ua thaum lub zog siv?
Txawm hais tias ionic crystals tau tuav ua ke los ntawm electrostatic zog, cov ions tau sib cais thaum cov khoom yaj. Ions muaj zog txaus nyiam rau qhov kawg ntawm cov polar molecules uas muaj nqi rov qab rau cov ions
Thaum twg koj yuav tsum siv correlation thiab thaum twg koj yuav tsum siv yooj yim linear regression?
Regression feem ntau yog siv los tsim cov qauv / qhov sib npaug los kwv yees cov lus teb tseem ceeb, Y, los ntawm cov txheej txheem kwv yees (X) sib txawv. Kev sib raug zoo feem ntau yog siv los ua kom sai thiab ua kom luv luv cov kev taw qhia thiab lub zog ntawm kev sib raug zoo ntawm ib pawg ntawm 2 lossis ntau tus lej sib txawv