Lub enthalpy ntawm adsorption yog tsawg thiab tsis zoo nyob rau hauv polarity. Tus nqi sib txawv ntawm -20 txog -40 kJ / mol. Los ntawm cov nqe lus saum toj no, peb tuaj yeem xaus tias cov lus tsis raug los ntawm cov kev xaiv muab yog enthalpy ntawm adsorption yog qis thiab zoo. Yog li, lo lus teb raug yog kev xaiv (D).
Qhov twg ntawm cov khoom hauv qab no yog physisorption?
adsorbent yuav twv yuav raug nyiam ib yam li nws yuav nyiam lwm hom thiab. Li no, nws tsis xav tau ib qho tshwj xeeb lossis tshwj xeeb lossis cov molecule lossis roj. nws yuav adsorb dab tsi. Physisorption yog vim tsis muaj zog vander waals rogwhereas, chemisorption yog vim muaj tshuaj lom neeg muaj zog.
Yuav ua li cas hauv qab no tsis haum rau physisorption?
Lub cev adsorption tshwm sim ntawm qhov kub thiab txias heev. Nrog nce nyob rau hauv kub physisorption txo. Yog li ntawd, ntawm lawv kubtsis yog qhov zoo rau lub cev adsorption. Li no, qhov kev xaiv raug yog D.
Yuav ua li cas yog ib qho ntawm cov hauv qab no tsis ncaj ncees lawm ntawm lub cev adsorption?
Lub cev adsorption yog vim van der Waals rog uas tsis muaj zog quab yuam, li no hom adsorption yog thim rov qab thiab tsis rov qab los. Tag nrho lwm cov nqe lus muaj tseeb.
piv txwv ntawm physisorption yog dab tsi?
Ib qho piv txwv ntawm physisorption yog qhov adsorption ntawm cov pa roj xws li hydrogen, nitrogen thiab lwm yam ntawm qhov kub thiab txias ntawm qhov chaw.adsorbent zoo li charcoal. Physisorption nyob ntawm thaj tsam ntawm qhov adsorbent. Raws li thaj chaw saum npoo nce, qhov adsorption kuj nce.
