Video: Koj xaiv qhov ntsuas li cas?
2024 Tus sau: Miles Stephen | [email protected]. Kawg hloov kho: 2023-12-15 23:36
Koj pom tseeb yuav tsum tau xaiv qhov ntsuas uas hloov xim kom ze li sai tau rau qhov sib npaug ntawm qhov sib npaug. Nws txawv ntawm titration mus rau titration. Daim duab tom ntej no qhia txog pHcurve rau kev ntxiv cov kua qaub uas muaj zog rau lub hauv paus muaj zog. Superimposed ntawm itare cov pH ntau rau methyl txiv kab ntxwv thiab phenolphthalein.
Raws li, koj yuav xaiv qhov ntsuas qhov ntsuas li cas rau kev titration?
Titrations . Vim tias qhov hloov pauv pH tshwm sim ze ntawm qhov sib npaug ntawm cov kua qaub-puag titrations , ib qhov taw qhia siv tau los qhia qhov kawg ntawm a titration . Thaum twg xaiv ib qhov taw qhia foracid-base titrations , xaiv ib qhov taw qhia nws pH ntau yam poob rau hauv pH hloov ntawm thereaction.
Ib tug kuj yuav nug, dab tsi yog qhov txawv ntawm cov ntsuas? Feem ntau cov ntsuas yog lawv tus kheej tsis muaj zog acids thiab teb rau kev hloov pauv hauv hydrogen ion concentration.
- Litmus. Feem ntau ntawm tag nrho cov ntsuas yog litmus ntawv.
- Phenolphthalein.
- Bromothymol Blue.
- Universal Indicator.
Hais txog qhov no, cov ntsuas ua haujlwm li cas?
pH ntsuas kuaj pom muaj H+ thiab OH-. Lawv ua Qhov no los ntawm reacting nrog H + thiab OH-: lawv yog lawv tus kheej tsis muaj zog acids thiab bases. Yog ib qhov taw qhia yog ib qho tsis muaj zog acid thiab muaj xim thiab nws lub hauv paus conjugate muaj xim sib txawv, deprotonation ua rau xim hloov.
Vim li cas methyl txiv kab ntxwv txiv kab ntxwv hauv Xim?
Methyl txiv kab ntxwv yog qhov ntsuas pH nquag siv hauv titration vim nws qhov tseeb thiab txawv xim variance ntawm txawv pH tus nqi. Methyl txiv kab ntxwv qhia liab xim nyob rau hauv acidic nruab nrab thiab xim daj hauv paus ntsiab lus. Vim nws hloov xim ntawm pH ntawm ib nrab zog acid, feem ntau nws yog siv nyob rau hauv titration rau acids.
Pom zoo:
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