http://butane.chem.uiuc.edu/elelliot/Chemistry102BFFall08/Polyprotic%20acid%20titration%20homework.pdf WebA polyprotic acid contains more than one ionizable hydrogen and undergoes a stepwise ionization process. If the acid dissociation constants of the ionizable protons differ …
Buffers, titrations, and solubility equilibria Khan Academy
WebTitration Curve for a Polyprotic Acid Objectives: In this experiment, a solution of H3PO4 will be titrated with a solution of NaOH. The pH of the solution will be monitored as the NaOH is added with a pH probe attached to a CBL. The shape of the pH titration curve will be observed and the Ka values for the acid will be determined. Introduction: WebIn this experiment you will be creating titration curves using Excel. For Part A you will consider three types of reactions: (1) strong acid - strong base titrations, (2) weak acid - strong base titrations, and (3) polyprotic acid - strong base titrations. In Part B of the lab you will use the titration method to the train law was enacted by
14.7 Acid-Base Titrations - Chemistry 2e OpenStax
WebThe information from titration curves, and especially the correlation between the half equivalence point and the pH can be used to estimate the p Ka values for the polyprotic acid and identify an unknown acid. These should be the key points about the titration of polyprotic acids. WebWhere, HA is the initial concentration of the weak acid, and [B] is the initial concentration of the weak base. In the case of polyprotic acids, only the most acidic K a is used to … Web11. Determine the volume and pH at the hall-equivalence point (10 and II) and thus the K, of your acid (12) 140 C. Titration Curve of a Polyprotic Acid 12. Check the calibration of the pH meter as in step 1. 13. Take a clean beaker, and pipet 25.0 mL of 0.1 M of the unknown polyprotic acid into it. the train law was approved on what exact date