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Hien LeCHEM1412.6310Dr. GormanMarch 29th, 2018Determination of the Molar Massand Ionization Constant of a Weak Monoprotic AcidI.Abstract:-The purposes of the experiment were to determine the molarmass and acid dissociation constant of a weak monoprotic acidby titration and pH measurement of solutions containing a knownconcentration of acetic acid; determine the molar mass and aciddissociation constant of an unknown weak acid; and learn how apH meter works and how to measure the pH of a solution.II.Introduction:-The Kavalue is an indication of acid strength. The larger thevalue of the Ka, the stronger the acid. Acid strength refers to thetendency for the ionization reaction to proceed to the right. Forthe acid HA this can be described as??(??) ⇌?+(??)+?−(??)
-Acid strength is given quantitatively by the size of an equilibriumconstant. This equilibrium constant is called Ka, and is defined by:+¿H¿¿−¿A¿¿¿Ka=¿+¿H¿¿−¿A¿¿+¿H¿¿−¿A¿¿¿¿¿−logKa=−