Question

o Graph a Titration curve (can be done using excel or hand drawn on graph paper) o Use the titration curve to find pH at the equivalence point - pka of Acetic acid compare the experimental the accuracy of the titration (for the pka value) X100% Imean experimental value - actual value Actual value Note: pka = -log, Questions 1) Define pH 2) Define pka

Exp data given

Answer 1

pH = pka [from graph] ® (pra = 5 acetic acid o pH at equivalence pt ® expt accuracy Dorota . ph=9 = 5 - 4.75 x 100 NSB was wred. 4.75 acetic acid pH = 14-9 = 5.26% =5 ④ ph is defined as Loa Soningate Base Pй е ? Htion conc. of . dr acid s substance Cat at equivalence pl. [cB]= (acid ] equilibrium). CScanned with CamScanner