Question

CHomework Chapter 17 Plotting a Titration Curve for a Carbonate-Bicarbonate System 9 of 24> Carbonic acid (H2COa) is a weak diprotic acid with K4.43 x 10-7 and K 4.73 x 10-11 change, and equilibrium values for each species and plugging these into the equlibrium constant expression. The expression HCO as shown in the equation using the equation Salts of the bicarbonate ion, such as sodium During the titration before the equivalence point, provided that the concentration of acid is significantly more than the pH pK+log At the equivalence point the solution is no longer a butter, but contains the weak acid H C0,. The change in concentration of the t on is significant and the equiibrium constant expression for Ka: must again be used to find the A 10.0-mL sample of 1.0 M NaHCO, is strated with 1.0 f HCI (hydrochloric acid) Approximate the stration curve by ploting the tollowing points pli ather O mL HCl added MacBook Air ± Plotting a Titration Curve for a Carbonate-Bicarbonate System | 90124 A 10.0-mL. sample of 1.0 M NaHCO, is aed with 1.0 M HCI (hydrochloric acid), Approximate the titrasin curve by plotting the following points: Carbonic acid (H2CO) is a weak diprotic acid with Ka 4.43 x 10-7 and K 2 4.73 x 10-11 pH after 0 mL HCl added, pH after 1.0mL HCI added. pH after 9.5 mL HCl added, pH after 10.0 mL HCI added (equivalence point), pH after 105 mL HCl added, and pH after 12.0 mL HCl added The bicarbonate ion, HCO as shown in the equation reacts with the acid bicarbonate (NaHCOs) act as weak bases. View Available Hint(s) plt MacBook

Answer 1

The pkb of bicarbonate to carbonic acid is 7.6 from literature value . The calculations are given in attachment .
4 제0-8 (*,イ 2 3.8

U add ase 6.645 pH-11-6.645 ,7.35- 9.5 ml HLL PH : 14-row : 5-12 20ne : ptt 3.35 i 10-5 me uu 5112 20.5 12 m

Titration plot 12 10 4 -2 10 12 14 Volume of HCl (mL)