Video: Qhov nqes hav ntawm qhov kev txiav txim xoom yog dab tsi?
2024 Tus sau: Miles Stephen | [email protected]. Kawg hloov kho: 2023-12-15 23:36
Rate Laws from Graphs of Concentration Versus Time (Integrated Rate Laws)
| Rau ib xoom xaj tshuaj tiv thaiv , | pes = k | (k = - txoj kab nqes ntawm kab) |
|---|---|---|
| Rau ib qho 1st xaj tshuaj tiv thaiv , | tus nqi = k[A] | (k = - txoj kab nqes ntawm kab) |
| Rau ib 2nd xaj tshuaj tiv thaiv , | tus nqi = k[A]2 | (k = txoj kab nqes ntawm kab) |
Ib yam li ntawd, txoj kab nqes ntawm xoom xaj tshuaj tiv thaiv qhia li cas?
Zero - Order Reactions . Hauv qee qhov cov tshuaj tiv thaiv , tus nqi yog thaj ywj pheej ntawm cov reactant concentration. Cov nqi ntawm cov no xoom - xaj cov tshuaj tiv thaiv ua tsis txawv nrog nce lossis txo qis reactants concentrations. Qhov no txhais tau tias tias tus nqi ntawm cov tshuaj tiv thaiv yog sib npaug rau tus nqi tas li, k, ntawm qhov ntawd tshuaj tiv thaiv.
Tsis tas li ntawd, qhov kev txiav txim xoom yog dab tsi? Kev txhais ntawm xoom - xaj tshuaj tiv thaiv : ib chemical tshuaj tiv thaiv uas tus nqi ntawm tshuaj tiv thaiv yog tas li thiab ywj siab ntawm cov concentration ntawm cov tshuaj reacting - piv xaj ntawm a tshuaj tiv thaiv.
Xav txog qhov no, qhov kev txiav txim xoom yog dab tsi nrog piv txwv?
Piv txwv ntawm a Zero - Order Reaction Cov txheej txheem Haber Cov txheej txheem Haber tsim cov ammonia los ntawm hydrogen thiab nitrogen gas. Qhov thim rov qab ntawm cov txheej txheem no (qhov decomposition ntawm ammonia los ua nitrogen thiab hydrogen) yog a xoom - xaj tshuaj tiv thaiv . “ xoom - xaj tshuaj tiv thaiv ” “Rate law.”
Koj pom qhov kev txiav txim xoom li cas?
Zero - xaj cov tshuaj tiv thaiv feem ntau pom thaum ib yam khoom uas yuav tsum tau rau lub tshuaj tiv thaiv mus txuas ntxiv, xws li qhov chaw los yog lub catalyst, yog saturated los ntawm cov reactants. A tshuaj tiv thaiv yog xoom - xaj yog hais tias cov ntaub ntawv concentration yog plotted piv rau lub sij hawm thiab qhov tshwm sim yog ib txoj kab ncaj nraim.
Pom zoo:
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