Video: Koj pom li cas pH ntawm litmus ntawv?
2024 Tus sau: Miles Stephen | [email protected]. Kawg hloov kho: 2023-12-15 23:36
Cov litmus test yog ua los ntawm kev tso ib qho me me ntawm cov qauv mus rau cov xim ntawv . Feem ntau, litmuspaper yog liab los yog xiav. Liab ntawv tig xiav thaum pH yog alkaline, thaum xiav ntawv tig liab thaum pH hloov acidic.
Yog li, koj yuav nrhiav pH ntawm daim ntawv pH li cas?
Kev ntsuas nrog pH ntawv Nrhiav tus pH ntawm ib yam khoom siv pHpaper . Dip qhov kawg ntawm pH strip rau hauv cov tshuaj lom neeg uas koj xav tau xeem . Tom qab ob peb feeb, tshem tawm cov ntawv thiab sib piv cov xim ntawm cov pH strip mus rau daim duab xim muab nrog rau pH ntawv kit.
Tsis tas li ntawd, koj yuav txiav txim siab pH ntawm ib yam khoom li cas? Rau xam pH ntawm cov kua dej aqueous koj yuav tsum paub qhov concentration ntawm hydronium ion hauv moles perliter (molarity). Cov pH Tom qab ntawd suav nrog cov lus qhia: pH = - log[H3O+].
Ib sab saum toj no, peb yuav tau litmus daim ntawv nyob qhov twg?
Daim ntawv Litmus Txhais Litmus ntawv yog lim ntawv uas tau kho nrog lub ntuj dej-soluble dye tau los ntawm lichens.
Daim ntawv tag nrho ntawm pH yog dab tsi?
PH stands rau Potential ntawm Hydrogen. Nws hais txog hydrogen ion concentration hauv cov tshuaj. Nws yog qhov ntsuas ntawm acidity los yog alkalinity ntawm kev daws. Cov PH tus nqi ranges ntawm 0 mus rau 14 ntawm a pH nplai.
Pom zoo:
Dab tsi yog qhov txawv ntawm lub teeb pom kev thiab pom tsis pom?
Tsis muaj qhov sib txawv ntawm lub teeb pom kev thiab pom tsis pom lub teeb xws li xov tooj cua nthwv dej thiab X rays. Lawv yog tag nrho cov electromagnetic tsis txawv nyob rau hauv ib txoj kev xwb: lawv wavelength. Lub teeb ultraviolet, X rays, thiab gamma rays tag nrho muaj luv luv wavelengths tshaj li pom lub teeb
Txoj kev faib cov ntaub ntawv twg muab cov ntaub ntawv sib npaug ntawm cov ntaub ntawv lossis cov kev tshuaj xyuas hauv txhua chav kawm cov ntaub ntawv?
Quantile. txhua chav kawm muaj cov yam ntxwv sib npaug. Ib qho kev faib tawm ntau yog zoo haum rau cov ntaub ntawv faib tawm. Quantile muab tib tus lej ntawm cov ntaub ntawv muaj nuj nqis rau txhua chav kawm
Yuav ua li cas koj sau txoj kab nqes nqes intercept daim ntawv nyob rau hauv tus qauv daim ntawv?
Standard form yog lwm txoj hauv kev los sau daim ntawv nqes hav-intercept (as opposed to y=mx+b). Nws sau li Ax+By=C. Koj tuaj yeem hloov daim ntawv nqes hav-intercept rau cov qauv zoo li no: Y=-3/2x + 3. Tom ntej no, koj cais qhov y-intercept (qhov no nws yog 2) zoo li no: Ntxiv 3/2x rau txhua sab ntawm kab zauv kom tau qhov no: 3/2x + y = 3
Dab tsi hloov xim ntawm litmus ntawv?
Litmus yog ib qho tsis muaj zog acidic, xim organic xim. Raws li nws qhov chaw hloov pauv ntawm cov kua qaub (pH 7), cov molecule hloov ntawm protonated acid mus rau ionized ntsev. Nws cov xim kuj hloov ntawm liab mus rau xiav. (Qhov tseeb pH ntau rau qhov kev hloov xim no yog los ntawm 4.5 txog 8.3.)
Yuav ua li cas koj pom lub kaum sab xis ntawm ib sector nyob rau hauv daim ntawv ncuav qab zib?
1 Teb Nyob rau hauv ib qho sector, muaj 3 qhov yuav tsum tau xav txog: Qhov ntev arc yog ib feem ntawm lub voj voog.Thesector cheeb tsam yog ib feem ntawm tag nrho cheeb tsam. Thesectorangle yog ib feem ntawm 360 ° Yog hais tias lub sector yog 20% ntawm daim ntawv ncuav qab zib, ces cov khoom no yog 20% ntawm tag nrho. 20% × 360 ° 20100 × 360 = 72 °