Yuav ua li cas koj xam alum yield?

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

Los ntawm moles, koj tuaj yeem nrhiav grams los ntawm kev siv cov molar loj ntawm cov alum . Thaum kawg, rau % tawm los , nws yuav yog tiag tawm los (12.77g) muab faib los ntawm theoretical tawm los (x 100%).

Yog li ntawd, koj yuav ua li cas nrhiav tau qhov feem pua yield ntawm alum?

Rau xam qhov feem pua yield , koj faib qhov tseeb tawm los los ntawm theoretical tawm los thiab ces muab 100%. Txhawm rau txiav txim siab theoretical tawm los , ua ntej koj xav tau cov tshuaj sib npaug kev sib npaug rau cov tshuaj tiv thaiv thiab tom qab ntawd koj yuav tsum txiav txim siab qhov twg ntawm ob lub reactants yog qhov txwv reagent.

Tsis tas li ntawd, pes tsawg moles ntawm alum yog tsim los ntawm 1 mole? Yog li, qhov tseem ceeb stoichiometric uas cuam tshuam moles ntawm alum rau moles ntawm Al yog 2 moles alum /2 moles Al.

Tsis tas li ntawd, koj ua li cas suav cov qoob loo qoob loo?

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%. Feem ntau, feem pua tawm los qis dua 100% vim qhov tseeb tawm los feem ntau tsawg dua li qhov theoretical tus nqi.

Koj puas tuaj yeem suav cov txiaj ntsig feem pua ntawm cov 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.