Qhov feem pua yield zoo yog dab tsi?

2024 Tus sau: Miles Stephen | [email protected]. Kawg hloov kho: 2023-12-15 23:36

Feem ntau cov tshuaj tiv thaiv yog muab qhov siab tshaj plaws feem pua yield ; raws li lub npe qhia, qhov no yog qhov siab tshaj plaws feem pua ntawm theoretical khoom uas yuav xyaum tau. Ib qho tshuaj tiv thaiv tawm los ntawm 90% ntawm cov theoretical ua tau yuav suav hais tias zoo heev. 80% yuav yog heev zoo . Txawm tias ib tawm los ntawm 50% yog suav tias tsim nyog.

Hais txog qhov no, qhov txiaj ntsig zoo npaum li cas txhais tau li cas?

Raws li Vogel's Textbook of Practical Organic Chemistry, tawm los ze rau 100% yog hu ua quantitative, tawm los saum 90% yog hu ua zoo heev, tawm los tshaj 80% yog heev zoo , tawm los tshaj 70% yog zoo , tawm los saum 50% yog ncaj ncees, thiab tawm los qis dua 40% hu ua neeg pluag.

Tom qab ntawd, lo lus nug yog, vim li cas thiaj li muaj feem pua yield zoo? Qhov tseem ceeb [edit] Feem pua yield Nws yog ib qho tseem ceeb vim tias: tshuaj lom neeg cov tshuaj tiv thaiv feem ntau tsim los ntawm cov khoom lag luam nrog rau cov khoom npaj. Nyob rau hauv feem ntau cov tshuaj tiv thaiv, tsis yog tag nrho cov reactants yeej react.

Dhau li ntawm no, puas yog qhov siab lossis qis feem pua yuav zoo dua?

A siab dua feem pua tej zaum yuav qhia tau hais tias koj cov khoom yog kis los ntawm dej, ntau reactant, los yog lwm yam khoom. A qis feem pua yield tej zaum yuav qhia tau tias koj mis-ntsuas ib reactant los yog spilled ib feem ntawm koj cov khoom.

Yuav ua li cas koj pom qhov feem pua yield?

Txhawm rau qhia qhov ua tau zoo ntawm cov tshuaj tiv thaiv, koj tuaj yeem suav cov feem pua yield siv cov qauv no: % tawm los = (ua tawm los / theoretical tawm los ) x 100. A feem yield ntawm 90% txhais tau hais tias cov tshuaj tiv thaiv yog 90% ua tau zoo, thiab 10% ntawm cov ntaub ntawv tau nkim (lawv ua tsis tau tejyam, lossis lawv cov khoom tsis raug ntes).