A weak acid (HA) has a pKa of 4.468. If a solution of this acid has a pH of 4.736, what percentage of the acid is not ionized? (Assume all H in solution came from the ionization of HA.)
HA(aq) - ---> H+(aq) + A-(aq)
Ka = [A-][H+]/[HA]
[H+] = 10^(-pH) = 10^(-4.736)
= 1.84*10^-5 M
at equilibroum
[H+] = [A-] = 1.84*10^-5 M
ka = 10^(-pka) = 10^(-4.468) = 3.4*10^-5
(3.4*10^(-5))= ((1.84*10^(-5))^2)/[HA]
[HA] = 9.95*10^(-6) M
% of acid not ionized = acid left / initial acid *100
= 9.95*10^(-6)/1 *100 = 9.95*10^(-4) %
A weak acid (HA) has a pKa of 4.468. If a solution of this acid has...
A weak acid (HA) has a pKa of 4.161. If a solution of this acid has a pH of 4.140, what percentage of the acid is not ionized? (Assume all H in solution came from the ionization of HA.)
A weak acid (HA) has a pKa of 4.734. If a solution of this acid has a pH of 4.273, what percentage of the acid is not ionized? (Assume all H in solution came from the ionization of HA.)
A weak acid (HA) has a pKa of 4.679. If a solution of this acid has a pH of 4.876, what percentage of the acid is not ionized? (Assume all H in solution came from the ionization of HA.)
A weak acid (HA) has a pKa of 4.011. If a solution of this acid has a pH of 4.141, what percentage of the acid is not ionized? (Assume all H in solution came from the ionization of HA.)
A weak acid (HA) has a pKa of 4.450. If a solution of this acid has a pH of 4.484, what percentage of the acid is not ionized? (Assume all H in solution came from the ionization of HA.) Number 46
A weak acid, HA, has a pK, of 4.971. If a solution of this acid has a pH of 4.437, what percentage of the acid is not ionized? Assume all H+ in the solution came from the ionization of HA. percentage not ionized:
A weak acid, HA, has a pK, of 4.618. If a solution of this acid has a pH of 4.253, what percentage of the acid is not ionized? Assume all H+ in the solution came from the ionization of HA percentage not ionized The Kb for an amine is 1.449 × 10-5 what percentage of the amine is protonated if the pH of a solution of the amine is 9.569? Assume that all OH came from the reaction of B...
A weak acid, HA, has a pK, of 4.093. If a solution of this acid has a pH of 4.786, what percentage of the acid is not ionized? Assume all H+ in the solution came from the ionization of HA. percentage not ionized: | 60.7
PLEASE HELP SOLVE THIS PROBLEM AND PLEASE WORK IT OUT STEP BY STEP!!! WILL RATE YOU!!!! A weak acid (HA) has a pKa of 4.456. If a solution of this acid has a pH of 4.123, what percentage of the acid is not ionized? (Assume all H* in solution came from the ionization of HA.) Number
6. A0.68 M solution of a weak acid HA is 0.35 % ionized. What are the H, A, and HA concentrations at equilibrium? What is K? 7. The K, for glyoxylic acid, HC HO, is 6.6 x 104. What is the pH of a 0.45 M solution of the acid? What is the % ionization of the acid at this concentration?