What is the pKa for the acid HA if a solution of 0.62 M HA and 0.82 M A- has a pH of 4.78?
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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.)
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 0.053 M solution of an acid (HA) has a pH of 4.63. What is the pKa?
50 ml of a solution which is 0.050 M in the acid HA, pKa = 3.80 and 0.10 M in HB, pKa = 8.20, is titrated with 0.2 M NaOH. Calculate the pH (a) at the first equivalence point and (b) at the second equivalence point.
15. 50 ml of a solution which is 0.050 M in the acid HA, pKa = 3.80 and 0.10 M in HB, pKa = 8.20, is titrated with 0.2 M NaOH. Calculate the pH (a) at the first equivalence point and (b) at the second equivalence point.
A buffer solution is made using a weak acid, HA, with a pKa of 5.88. If the ratio of [A-] to [HA] is 0.010, what is the pH of the buffer? pH