WebThe pH of a salt solution is determined by the relative strength of its conjugated acid-base pair. Salts can be acidic, neutral, or basic. Salts that form from a strong acid and a weak base are acid salts, like ammonium chloride (NH4Cl). Salts that form from a weak acid and a strong base are basic salts, like sodium bicarbonate (NaHCO3). Sort by: WebMar 18, 2014 · When all of a weak acid has been neutralized by strong base, the solution is essentially equivalent to a solution of the conjugate base of the weak acid. For example, if a 0.2 M solution of acetic acid is titrated to the equivalence point by adding an equal volume of 0.2 M NaOH, the resulting solution is exactly the same as if you had prepared a 0.1 M …
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WebAug 31, 2024 · Ka from Titration Curve At the equivalence point, the pH of the solution is equivalent to the pKa of the solution. Thus using Ka = – log pKa equation, we can quickly determine the value of Ka using a titration curve. How do you find K from Ka? What is the kb of CH3COO? The value of Kb for CH3COO-, is 5.56×10-10. What is the kb value of NH4OH? WebCalculation of the pH of a weak base 1. Find the [OH-] from the pKb value (in the same way as for weak acid type calculations) 2. From the [OH-] find the pOH 3. Find the pH from: pOH + pH = 14 Example: stage 1: pH of 0,5 M phenol (pKa = 9,83) pKa = 9,83 therefore pKb = 14 - 9,83 pKb = 4,07 Kb = 10 -4,07 = 8,51 x 10 -5 Kb x [phenol] = [X+] [OH-] phoebe maltz bovy twitter
Answered: Calculate the pH of a 0.15 M solution… bartleby
WebFeb 2, 2024 · Just as with pH, pOH, and pKw, we can use negative logarithms to avoid exponential notation in writing acid and base ionization constants, by defining pKa as follows: pKa = − log10Ka Ka = 10 − pKa and pKb as pKb = − log10Kb Kb = 10 − pKb WebMar 25, 2024 · Ammonium bromide is an acid, so solutions of it should have a pH less than 7. The K b value provided refers to the equilibrium: NH 3 + H 2 O ↔ NH 4 + + OH – K b = … WebA base ionization constant (Kb) is the equilibrium constant for the ionization of a base. pKb can be calculated by pKb = -log 10 (Kb). A large Kb value indicates the high level of dissociation of a strong base. A lower pKb value indicates a stronger base. phoebe magic school bus rides again