Phenolphthalein tsis yog qhov taw qhia ntuj nws yog tus txiv neej tsim lossis cov khoom siv hluavtaws uas tsis muaj xim hauv cov kua qaub nruab nrab tab sis muab cov xim liab hauv nruab nrab nruab nrab.
YDab tsi yog phenolphthalein?
- Phenolphthalein (HIn) yog tsis muaj zog acidic hauv xwmthiab hauv cov tshuaj aqueous, nws dissociates rau hauv H + thiab In- ions.
Natural indicators, As?
Natural Indicator yog ib hom kev taw qhia uas tuaj yeem pom nyob rau hauv ib txwm muaj thiab tuaj yeem txiav txim siab seb cov khoom puas yog cov tshuaj acidic lossis cov khoom siv yooj yim. Qee qhov piv txwv ntawm cov ntsuas ntuj yog liab cabbage, turmeric, kua txiv hmab txiv ntoo, turnip daim tawv nqaij, curry hmoov, cherries, beetroots, dos, lws suav, thiab lwm yam.
Puas yog phenolphthalein qhov ntsuas nruab nrab?
Yog cov tshuaj tsis yog acidic lossis alkaline nws tsis yog nruab nrab. … Cov ntsuas yog cov khoom uas hloov xim thaum lawv ntxiv rau cov kua qaub los yog alkaline. Litmus, phenolphthalein, thiab methyl txiv kab ntxwv yog tag nrho cov cim qhia uas feem ntau siv hauv chav kuaj.
Puas Litmus yog qhov taw qhia ntuj?
Litmus yog a qhov taw qhia ntuj Nws yog xim liab uas tau muab rho tawm los ntawm hom nroj tsuag hu ua 'lichen'. … Blue litmus daim ntawv hloov liab yog hais tias cov khoom yog acidic. Cov ntawv liab litmus hloov xiav yog tias cov khoom siv yooj yim lossis alkaline. Litmus hloov liab hauv cov kua qaub thiab xiav hauv cov ntsiab lus yooj yim.
