Qhov sib txawv tseem ceeb ntawm molar solubility thiab cov khoom solubility tas li yog tias molar solubility piav qhia txog kev sib cais ntawm cov tshuaj ib liter ntawm cov tshuaj, whereas cov khoom solubility tas li piav qhia txog kev sib cais ntawm cov khoom siv hauv cov tshuaj aqueous.
Ob qho tib si molar solubility thiab cov khoom solubility tas li yog cov ntsiab lus tshuaj uas piav qhia txog kev sib cais ntawm cov tshuaj hauv cov kev daws teeb meem. Peb tuaj yeem xam molar solubility los ntawm cov khoom solubility tas li. Yog li ntawd, lawv muaj feem cuam tshuam rau ib leeg.
Molar Solubility yog dab tsi?
Molar solubility yog tus naj npawb ntawm moles ntawm cov khoom uas yaj ib liter ntawm cov tshuaj ua ntej saturation. Qhov ntawd txhais tau tias; cov molar solubility muab tus nqi ntawm ib yam khoom uas peb yuav yaj nyob rau hauv ib tug tov ua ntej cov tshuaj tau saturated los ntawm tej yam khoom. Peb tuaj yeem xam cov nyiaj no siv cov khoom solubility tas li lossis Ksp thiab stoichiometry. Chav tsev rau molar solubility yog mol / L. Peb tuaj yeem txhais lo lus no ua "M". Peb tuaj yeem xam cov molar solubility siv Ksp, tab sis peb yuav tsum paub cov ions uas tsim los ntawm kev sib cais thaum lub sij hawm dissolution ntawm cov tshuaj nyob rau hauv cov tshuaj.
Cia peb xav txog ib qho piv txwv; Yog hais tias AB yog yaj nyob rau hauv ib tug aqueous tov, nws dissociates rau A thiab B ionic khoom. Qhov sib npaug rau qhov kev sib cais no yog raws li hauv qab no:
AB(s) ⇌ A(aq) + B(aq)
Raws li stoichiometry ntawm cov tshuaj tiv thaiv no, yog tias qhov kawg ntawm A yog "x", ces qhov kawg concentration ntawm B kuj yog "x". Tom qab ntawd, qhov sib npaug ntawm cov khoom sib npaug rau cov tshuaj tiv thaiv no yog;
Ksp=[A][B]
=[x][x]
=x2
Ntawm no, x yog molar solubility. Yog li, yog tias peb paub Ksp ntawm cov tshuaj tiv thaiv, peb tuaj yeem suav cov x, molar solubility ntawm cov tshuaj tiv thaiv.
Yam khoom Solubility Constant yog dab tsi?
Cov khoom solubility tas li lossis solubility cov khoom tas li yog qhov sib npaug tas li rau kev sib cais ntawm cov khoom siv hauv cov tshuaj aqueous. Yog li ntawd, nws piav qhia txog kev sib cais ntawm cov khoom siv hauv cov tshuaj aqueous, thiab nws sawv cev rau qib ntawm cov kuab tshuaj yaj hauv cov tshuaj. Peb tuaj yeem pom nws li Ksp. Feem ntau, Ksp yog xam los ntawm kev sib faib cov concentrations ntawm ionic khoom tom qab dissolution ntawm cov khoom. Rau kev tawg ntawm AB2, cov tshuaj tiv thaiv yog raws li nram no:
AB2(s) ⇌ A(aq) + 2B(aq)
Rau cov tshuaj tiv thaiv saum toj no, cov khoom solubility tas li lossis Ksp yog raws li hauv qab no:
Ksp=[A(aq)][B(aq) 2
Qhov txawv ntawm Molar Solubility thiab Cov Khoom Solubility Constant yog dab tsi?
Ob leeg, molar solubility thiab cov khoom solubility tas li, piav qhia txog kev sib cais ntawm cov tshuaj hauv cov tshuaj. Txawm li cas los xij, qhov sib txawv tseem ceeb ntawm molar solubility thiab cov khoom solubility tsis tu ncua yog tias molar solubility piav qhia txog kev sib cais ntawm cov tshuaj ib liter ntawm cov tshuaj, whereas cov khoom solubility tas li piav qhia txog kev sib cais ntawm cov khoom siv hauv cov tshuaj aqueous.
Dhau li ntawm, molar solubility yog tus naj npawb ntawm moles ntawm cov khoom uas yaj ib liter ntawm cov tshuaj ua ntej saturation. Meanwhile, cov khoom solubility tas li yog, los yog cov khoom solubility tas li yog qhov sib npaug tas li rau cov khoom tawg ntawm cov khoom hauv cov tshuaj aqueous. Peb tuaj yeem pom cov molar solubility li "M" thiab cov khoom solubility tas li li "Ksp".
Hauv qab infographic qhia txog qhov sib txawv ntawm molar solubility thiab cov khoom solubility tas li.
Summary – Molar Solubility vs Product Solubility Constant
Nyob rau hauv cov ntsiab lus, ob qho tib si, molar solubility thiab cov khoom solubility tas li, piav qhia txog kev sib cais ntawm cov tshuaj hauv cov tshuaj. Txawm li cas los xij, qhov sib txawv tseem ceeb ntawm molar solubility thiab cov khoom solubility tsis tu ncua yog tias molar solubility piav qhia txog kev sib cais ntawm cov tshuaj ib liter ntawm cov tshuaj, whereas cov khoom solubility tas li piav qhia txog kev tawg ntawm cov khoom siv hauv cov tshuaj aqueous.
