Cov txheej txheem:

Yuav ua li cas koj pom qhov theoretical yield ntawm methyl 3 Nitrobenzoate?
Yuav ua li cas koj pom qhov theoretical yield ntawm methyl 3 Nitrobenzoate?

Video: Yuav ua li cas koj pom qhov theoretical yield ntawm methyl 3 Nitrobenzoate?

Video: Yuav ua li cas koj pom qhov theoretical yield ntawm methyl 3 Nitrobenzoate?
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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

  1. Txiav txim seb tus naj npawb ntawm moles ntawm txhua reactant.
  2. Muab qhov hnyav molecular los ntawm tus lej ntawm moles hauv qhov sib npaug.
  3. Xam qhov theoretical mole yield los ntawm kev siv tshuaj sib npaug.
  4. 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%.

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