Phenolphthalein feem ntau yog siv los ua qhov taw qhia hauv acid-base titrations. Rau daim ntawv thov no, nws hloov tsis muaj xim nyob rau hauv cov kua qaub thiab liab hauv cov kev daws teeb meem.
Yuav ua li cas thaum phenolphthalein ntxiv rau HCl?
Xim ntawm cov tshuaj hydrochloric acid tsis hloovntawm qhov ntxiv ntawm phenolphthalein ntsuas. … Phenolphthalein qhov taw qhia tseem tsis muaj xim nyob hauv cov kua qaub thaum nws cov xim hloov mus rau xim liab hauv cov tshuaj yooj yim.
Cov kua qaub twg yuav tig phenolphthalein liab?
LiOH yog lub hauv paus thiab yuav tig xim phenolphthalein liab. Cov dej txiv qaub yog cov tshuaj calcium hydroxide, Ca(OH)2, uas yog lub hauv paus.
Phenolphthalein yuav muaj xim dab tsi hauv HCl?
Teb: Phenolphthalein yuav colourless hauv 0.1M HCl tov.
Puas phenolphthalein react nrog HCl?
Phenolphthalein yog qhov ntsuas uas tsis muaj xim nyob hauv acidic nruab nrab thiab liab dawb hauv nruab nrab nruab nrab. Txij li thaum Hydrochloric acid yog cov kua qaub, cov tshuaj yuav tig xim tsis muaj xim.
