Kev siv lub ntsiab ntawm litmus yog kuaj seb cov tshuaj puas yog acidic lossis yooj yim. Lub teeb-xiav litmus ntawv hloov xim liab nyob rau hauv acidic tej yam kev mob, thiab liab litmus ntawv hloov xiav nyob rau hauv lub hauv paus los yog alkaline tej yam kev mob, nrog rau cov xim hloov nyob rau hauv lub pH ntau ntawm 4.5-8.3 ntawm 25 ° C (77 ° F). Neutral litmus ntawv yog ntshav.
xiav litmus daim ntawv xeem yog dab tsi?
Blue Litmus daim ntawv yog kev sim pH tsis zoo kom txiav txim siab tias qee yam yog acidic. Daim ntawv Blue Litmus yuav tig liab yog tias cov tshuaj yog cov kua qaub, thiab yuav nyob twj ywm tsis hloov yog tias tsis yog. Nws yog qhov yooj yim. Daim ntawv Blue Litmus tsis tuaj nrog e xim daim ntawv vim nws tsis tuaj yeem muab koj tus nqi pH.
Vim li cas koj thiaj li yuav tsum siv ob daim ntawv liab thiab xiav litmus?
txhawm rau txiav txim siab seb cov khoom puas yog cov kua qaub lossis lub hauv paus koj yuav tsum siv daim ntawv liab thiab xiav litmus. Qhov no yog qhov tseem ceeb los txiav txim siab yog tias cov khoom nruab nrab vim tias daim ntawv yuav nyob twj ywm tib xim hauv ob qho tib si. … Cov ntsuas yog siv los txiav txim seb cov khoom puas yog acids, bases, lossis nruab nrab.
Txoj cai rau daim ntawv litmus yog dab tsi?
Feem ntau, cov ntawv litmus yog xim liab hauv qab pH ntawm 4.5 thiab xiav saum pH ntawm 8.3. Yog tias daim ntawv hloov ntshav, qhov no qhia tias pH nyob ze nruab nrab. daim ntawv liab uas tsis hloov xim qhia cov qauv yog cov kua qaub. Daim ntawv xiav uas tsis hloov xim qhia cov qauv yog lub hauv paus.
Ib daim ntawv litmustshuaj lom?
Cov khoom siv yog tsis xav tias yuav ua rau muaj kev phom sij rau kev noj qab haus huv lossis khaus ntawm txoj hlab pa (raws li cais siv cov qauv tsiaj).
