Qhov sib txawv tseem ceeb ntawm Ksp thiab Keq yog lub sij hawm Ksp piav qhia txog kev solubility ntawm ib yam khoom, whereas lub sij hawm Keq piav qhia txog qhov sib npaug ntawm cov tshuaj tiv thaiv tshwj xeeb.
Ksp stands rau cov khoom solubility tas li thaum Keq sawv rau qhov sib npaug tas li. Ksp kuj yog ib hom kev sib npaug tas li, tab sis nws tsuas yog cuam tshuam nrog kev solubility ntawm cov khoom siv. Keq yog lub ntsiab lus dav dav uas peb tuaj yeem siv los txiav txim siab cov khoom ntawm txhua hom kev sib npaug.
Ksp yog dab tsi
Ksp stands rau solubility khoom tas li. Nws muaj feem xyuam rau kev sib cais ntawm cov khoom siv hauv cov tshuaj aqueous. Qhov no tsis tu ncua piav qhia txog qib ntawm cov tshuaj lom neeg yaj hauv cov kua dej aqueous. Ntau dua qhov solubility, qhov siab dua tus nqi ntawm Ksp. Rau qhov kev daws teeb meem dav dav, peb tuaj yeem muab qhov sib npaug rau Ksp raws li hauv qab no:
Yog li ntawd, cov khoom lag luam solubility tas li yog los ntawm kev sib npaug ntawm cov molar concentrations ntawm cov khoom peb tau txais los ntawm kev tawg ntawm cov khoom siv. Txawm li cas los xij, yog tias muaj kev sib raug zoo ntawm stoichiometric ntawm reactants thiab cov khoom, peb yuav tsum suav nrog stoichiometric coefficient hauv peb qhov sib npaug. Nws yog ib qho tsim nyog los nce qhov concentration ntawm cov khoom mus rau lub zog coefficient.
Common Ion Effect:
Peb yuav tsum nco ntsoov tias qhov solubility ntawm cov tshuaj tiv thaiv sib npaug yog txo los ntawm cov nyhuv ion. Piv txwv li, yog tias muaj ib qho ion nyob rau hauv cov kev daws teeb meem thiab cov khoom sib xyaw uas peb yuav yaj hauv qhov kev daws teeb meem, peb tuaj yeem soj ntsuam Ksp qis dua qhov xav tau. Yog tsis muaj ion, Ksp yuav yog tus nqi loj.
S alt Effect:
Qhov muaj cov ions tsis sib xws hauv cov tshuaj tuaj yeem cuam tshuam rau Ksp ntawm qhov sib npaug. Piv txwv li, yog tias muaj ntsev ion nyob rau hauv cov tshuaj ntxiv rau cov ions tam sim no nyob rau hauv cov khoom, ces peb hu nws ib tug tsis tshua muaj ion, thiab nws yuav ua rau kom tus nqi ntawm Ksp.
Keq yog dab tsi?
Keq stands for equilibrium constant. Lub equilibrium tas li yog qhov sib piv ntawm cov concentrations ntawm cov khoom thiab cov concentrations ntawm reactants ntawm equilibrium. Lo lus no tsuas yog siv tau rau cov tshuaj tiv thaiv uas nyob hauv qhov sib npaug. Cov tshuaj tiv thaiv quotient thiab equilibrium tas li yog tib yam rau cov tshuaj tiv thaiv uas nyob rau hauv equilibrium.
Peb tuaj yeem muab qhov sib npaug tsis tu ncua raws li cov concentrations nce mus rau lub zog ntawm stoichiometric coefficients. Lub equilibrium tas li yog nyob ntawm qhov kub thiab txias ntawm qhov system txiav txim siab vim qhov kub thiab txias cuam tshuam rau kev solubility ntawm cov khoom thiab lub ntim expansion. Txawm li cas los xij, qhov sib npaug ntawm qhov sib npaug tas li tsis suav nrog cov ntsiab lus hais txog cov khib nyiab uas nyob ntawm cov reactants lossis cov khoom. Tsuas yog cov khoom nyob rau hauv cov kua theem thiab gaseous theem yog xam.
Piv txwv li, cia peb xav txog qhov sib npaug ntawm carbonic acid thiab bicarbonate ion.
H2CO3 (aq) ↔ HCO3 –(aq) + H+ (aq)
Qhov sib npaug tsis tu ncua rau cov tshuaj tiv thaiv saum toj no tau muab hauv qab no.
Equilibrium Constant (K)=[HCO3–(aq)] [H+ (aq)] / [H2CO3 (aq)
Qhov txawv ntawm Ksp thiab Keq yog dab tsi?
Ksp yog hom Keq. Ksp stands rau solubility khoom tas li thaum Keq stands rau equilibrium tas li. Qhov sib txawv tseem ceeb ntawm Ksp thiab Keq yog tias lo lus Ksp piav qhia txog kev solubility ntawm ib yam khoom, thaum lub sij hawm Keq piav txog qhov sib npaug ntawm cov tshuaj tiv thaiv tshwj xeeb. Thaum xav txog qhov sib npaug, Ksp tsuas yog muaj cov khoom peb tau txais tom qab kev sib cais ntawm cov khoom thaum Keq muaj ob qho tib si cov khoom thiab cov reactants uas nyob rau hauv lub xeev aqueous. Yog li, qhov no yog qhov sib txawv tseem ceeb ntawm Ksp thiab Keq.
Summary – Ksp vs Keq
Ksp yog hom Keq. Ksp stands rau solubility khoom tas li thaum Keq stands rau equilibrium tas li. Qhov sib txawv tseem ceeb ntawm Ksp thiab Keq yog lub sij hawm Ksp piav qhia txog kev solubility ntawm ib yam khoom, whereas lub sij hawm Keq piav txog qhov sib npaug ntawm cov tshuaj tiv thaiv tshwj xeeb.
