Video: Puas yog bromocresol ntshav yog cov kua qaub lossis lub hauv paus?
2024 Tus sau: Miles Stephen | [email protected]. Kawg hloov kho: 2023-12-15 23:36
| Qhov taw qhia | Acid Xim | Puag Xim |
|---|---|---|
| alpha-Naphthyl liab | liab | daj |
| Methyl liab | liab | daj |
| Litmus (azolitmin) | liab | xiav |
| Bromocresol liab | daj | violet |
Hais txog qhov no, yog Ntshav acidic lossis yooj yim?
Kev daws nrog pH ntawm 5 thiab 7 yog nruab nrab, 8 lossis siab dua yog lub hauv paus, thiab 4 lossis qis dua yog cov kua qaub. Txiv qaub kua txiv, txiv qaub kua txiv thiab vinegar yog cov kua qaub, yog li lawv yuav tsum tau tig qhov taw qhia kev daws teeb liab lossis xim liab.
Ib sab saum toj no, bromocresol ntshav ua haujlwm li cas? Bromocresol liab yog qhov ntsuas pH uas hloov xim los ntawm daj (ntawm pH 5.2 qis) mus rau violet (siab dua pH 6.8). Nws yog tsuas yog siv los ua fluorescent stain hauv cov poov xab. Nws pab nyob rau hauv cov cell tuag suav rau cov cell nrog plasma membrane puas.
Ntawm no, dab tsi xim yog Bromothymol xiav nyob rau hauv acid thiab puag?
Bromthymol xiav yog cov kua qaub tsis muaj zog. Nws tuaj yeem ua rau hauv cov kua qaub lossis cov hauv paus, nyob ntawm pH ntawm cov tshuaj. Qhov no reagent yog daj nyob rau hauv acidic daws, xiav nyob rau hauv cov ntsiab lus daws teeb meem thiab ntsuab nyob rau hauv nruab nrab tov.
Puas yog bromophenol xiav yog cov kua qaub lossis lub hauv paus?
Raws li qhov ntsuas acid-base, nws qhov muaj txiaj ntsig zoo nyob ntawm pH 3.0 thiab 4.6. Nws hloov los ntawm daj ntawm pH 3.0 rau xiav ntawm pH 4.6; cov tshuaj tiv thaiv no rov qab los. Bromophenol xiav yog structurally ntsig txog phenolphthalein (ib qho qhia nrov).
Pom zoo:
Koj puas ntxiv cov kua qaub rau hauv lub hauv paus lossis lub hauv paus rau cov kua qaub?
Ntxiv cov kua qaub ua kom cov concentration ntawm H3O + ions hauv cov tshuaj. Ntxiv ib lub hauv paus txo cov concentration ntawm H3O + ions hauv cov tshuaj. Cov kua qaub thiab lub hauv paus zoo li cov tshuaj tiv thaiv. Yog hais tias lub hauv paus yog ntxiv rau cov kua qaub, cov tshuaj yuav tsis acidic thiab txav mus rau nruab nrab ntawm pH nplai
Puas yog calcium cyanide yog cov kua qaub lossis lub hauv paus?
Calcium cyanide decomposes rau tsis tshua muaj tshuaj lom thiab flammable hydrogen cyanide thiab tshuaj lom thiab irritating nitrogen oxides thaum rhuab hauv hluav taws. QHOV 9. Lub cev thiab tshuaj lom neeg. Lub cev lub cev: Lub hauv paus ruaj khov: Reacts maj mam nrog dej los tsim calcium hydroxide, uas yog lub hauv paus muaj zog
Puas yog urea yog cov kua qaub lossis lub hauv paus?
Dissolved hauv dej, nws tsis yog acidic noralkaline. Lub cev siv nws nyob rau hauv ntau cov txheej txheem, tshwj xeeb tshaj yog nitrogen excretion. Lub siab tsim nws los ntawm kev sib txuas ob ammoniamolecules (NH3) nrog carbon dioxide (CO2) molecule nyob rau hauv lub voj voog urea
Puas yog sodium hydrosulfide yog cov kua qaub lossis lub hauv paus?
Ib tug chemical puag. Reacts nrog cov kua qaub kom tso cov nplaim hluav taws thiab cov pa phem gaseous hydrogen sulfide. Tsuav yog cov tshuaj khaws cia muaj zog alkaline, pH> 10, muaj tsawg heev tso H2S. Ntawm pH = 7, qhov feem pua ntawm H2S tso tawm yog ze rau 80%
Cov tshuaj ntxuav qhov cub puas yog cov kua qaub lossis cov hauv paus?
Ntau yam khoom siv tu, xws li xab npum thiab qhov cub ntxuav, yog cov hauv paus. Bases neutralize (tso tawm) acids. Alkalis yog cov hauv paus uas yaj hauv dej. Qhov ntau hydroxide ions ib lub hauv paus muaj, nws muaj zog dua