Rau qhov kev txiav txim xoom, nce qhov concentration ntawm cov tshuaj tiv thaiv yuav tsis ua kom tus nqi ntawm cov tshuaj tiv thaiv. Zero-order cov tshuaj tiv thaiv feem ntau pom thaum cov khoom siv uas yuav tsum tau ua rau cov tshuaj tiv thaiv mus ntxiv, xws li qhov chaw los yog cov catalyst, yog saturated los ntawm cov reactants.
Yuav ua li cas yog tus qauv ntawm xoom xaj tshuaj tiv thaiv?
Txoj cai sib sau ua ke rau qhov kev txiav txim xoom xaj A → cov khoom yog [A]_t=-kt + [A]_0. Vim tias qhov sib npaug no muaj daim ntawv y=mx + b, ib zajlus ntawm qhov concentration ntawm A raws li kev ua haujlwm ntawm lub sijhawm yields txoj kab ncaj nraim. Tus nqi tas li rau cov tshuaj tiv thaiv tuaj yeem txiav txim siab los ntawm txoj kab nqes hav, uas yog sib npaug rau -k.
Zoo kev txiav txim siab piav qhia yog dab tsi?
Zero-order cov tshuaj tiv thaiv yog tshuaj tiv thaiv qhov twg tus nqi tsis txawv nrog qhov nce lossis txo qis hauv cov concentration ntawm cov reactants.
Yuav ua li cas yog xoom xaj tshuaj tiv thaiv muab piv txwv?
Reaction nyob rau hauv uas concentration ntawm reactants tsis hloov nrog lub sij hawm thiab cov concentration tus nqi nyob twj ywm nyob rau hauv tag nrho yog hu ua xoom txiav txim tshuaj. A→ khoom. Piv txwv: H2+Cl2hv 2HCl.
Zoo xaj yog dab tsi?
Zero-order cov tshuaj tiv thaiv feem ntau pom thaum cov khoom siv uas yuav tsum tau ua rau cov tshuaj tiv thaiv mus, xws li qhov chaw lossis lub catalyst, yog saturated los ntawm cov reactants. Ib qho tshuaj tiv thaiv yog xoom-kev txiav txim yog tias cov ntaub ntawv concentration yog plotted piv rau lub sijhawm thiab covqhov tshwm sim yog ib txoj kab ncaj nraim.
