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Video: Yuav ua li cas koj pom qhov theoretical yield ntawm methyl 3 Nitrobenzoate?
2024 Tus sau: Miles Stephen | [email protected]. Kawg hloov kho: 2023-12-15 23:36
Cov qhov tseeb yield methyl – 3 - nitrobenzoate crude khoom yog 2.6996 g thaum lub theoretical tawm los yog 3,9852g. Cov feem pua yield uas peb tau txais yog 67.74%. Lub melting point yog 75˚C - 78˚C thiab 76˚C - 78˚C, tus nqi raug kaw rau cov ntaub ntawv tus nqi uas yog 78˚C.
Tsuas yog li ntawd, kuv yuav xam cov txiaj ntsig theoretical li cas?
Yuav Ua Li Cas Sau Theoretical Yields
- Txiav txim seb tus naj npawb ntawm moles ntawm txhua reactant.
- Muab qhov hnyav molecular los ntawm tus lej ntawm moles hauv qhov sib npaug.
- Xam qhov theoretical mole yield los ntawm kev siv tshuaj sib npaug.
- Muab cov naj npawb ntawm cov moles ntawm cov khoom los ntawm qhov hnyav molecular ntawm cov khoom los txiav txim siab cov txiaj ntsig theoretical.
Tsis tas li ntawd, cov khoom ntawm nitration ntawm methyl benzoate yog dab tsi? Nitration yog qhov hloov ntawm NO2 pab pawg rau ib qho ntawm hydrogen atoms ntawm lub nplhaib benzene. Hauv qhov kev sim no cov tub ntxhais kawm nitrate methyl benzoate . Cov tshuaj tiv thaiv yog regioselective thiab tsim muaj feem ntau methyl 3-Nitrobenzoate hmoov.
Tom qab ntawd, lo lus nug yog, koj puas tuaj yeem suav feem pua yield siv moles?
Xam cov feem pua yield Ua ntau qhov xav tau moles ntawm cov khoom los ntawm nws cov molar mass. Piv txwv li, molar loj ntawm HF yog 20 grams. Yog li ntawd, yog koj xav 4 moles ntawm HF, theoretical tawm los yog 80g. Faib qhov tseeb tawm los ntawm cov khoom los ntawm theoretical tawm los thiab muab 100.
Tus qauv ntawm yield yog dab tsi?
Feem pua tawm los yog qhov feem pua ntawm qhov tseeb tawm los mus rau theoretical tawm los . Nws yog xam los ua qhov kev sim tawm los muab faib los ntawm theoretical tawm los multiplied los ntawm 100%. Yog qhov tseeb thiab theoretical tawm los yog tib yam, cov feem pua tawm los yog 100%.
Pom zoo:
Koj pom qhov theoretical feem pua ntawm cov pa oxygen hauv KClO3 li cas?
Qhov kev sim feem pua ntawm cov pa oxygen hauv cov qauv ntawm KClO3 yog xam los ntawm kev siv qhov sib npaug no. Kev sim % oxygen = Mass of oxygen poob x 100 Mass ntawm KClO3 Tus nqi theoretical ntawm % oxygen hauv potassium chlorate yog xam los ntawm cov mis KClO3 nrog molar mass = 122.6 g / mol
Yuav ua li cas koj pom qhov ntsuas qhov ntsuas ntawm dilation ntawm lub dav hlau ua haujlwm?
Daim duab peb sab ABC nrog kev ua haujlwm A(2, 6), B(2, 2), C(6, 2). Tom qab ntawd dilate daim duab los ntawm qhov ntsuas qhov ntsuas ntawm 1/2 nrog lub hauv paus los ua qhov nruab nrab ntawm dilation. Ua ntej, peb kos peb daim duab peb sab qub hauv lub dav hlau ua haujlwm. Tom ntej no, peb muab txhua qhov kev sib koom tes los ntawm qhov ntsuas qhov ntsuas ntawm 1/2
Dab tsi yog qhov txawv ntawm qhov pom tseeb qhov loj thiab qhov ntsuas qhov ntsuas qhov tseeb?
Dab tsi yog qhov txawv ntawm qhov pom tseeb thiab qhov tseeb? Pom meej qhov loj npaum li cas yog qhov ci ntawm lub hnub qub tshwm los ntawm lub ntiaj teb thiab nyob ntawm qhov ci thiab qhov deb ntawm lub hnub qub. Qhov loj npaum li cas yog qhov ci ntawm lub hnub qub yuav tshwm sim los ntawm tus qauv nyob deb
Yuav ua li cas koj pom qhov sib npaug ntawm qhov nqus ntawm qhov nqus?
X = [Fe(SCN)2+] thiab yuav tsum tau txiav txim los ntawm tus qauv nkhaus. Tom qab ntawd koj tuaj yeem xam qhov sib npaug tas li, Keq, siv qhov sib npaug sib npaug. Tus qauv nkhaus yog ib zajlus ntawm Absorbance piv [Fe(SCN)2+] (Daim duab 8.1). Nws tuaj yeem siv los muab peb cov concentration ntawm cov tshuaj thaum muab cov absorbance
Koj pom qhov theoretical thiab kev sim yuav ua li cas?
Qhov kev tshwm sim theoretical yog qhov peb xav tias yuav tshwm sim, qhov kev sim qhov tshwm sim yog qhov tshwm sim tiag tiag thaum peb sim nws. Qhov tshwm sim tseem suav nrog tib txoj kev, siv tus lej ntawm txoj hauv kev uas qhov tshwm sim tuaj yeem tshwm sim faib los ntawm tag nrho cov txiaj ntsig