Buffers
What is the definition of a Buffer?
What is a Solution that resists change in pH when limited amounts of an acid (H3O+) or a base (OH-) are added to it?
The effectiveness of a buffer depends on what two factors?
What are Relative Amounts of acid and base, ano absolute concentrations of acid and base?
The pH of the equivalence point depends on the _______
What is pH of the salt solution?
Molarity
What is M = mol/L ?
What is a buffer solution composed of?
What is a Weak base + Salt of its conjugate acid?
or
What is a Weak acid + Salt of its Conjugate base?
The _____ the amounts of each component present in a buffer solution, the more resistant the buffer is to changes in pH.
What is “Greater” ?
The pH of the equivalence point for a strong:strong titration is always ____
What is 7?
Henderson-Hasselbalch
pH = pKa + log (𝐛𝐚𝐬𝐞)/(𝐚𝐜𝐢𝐝)
What unit is used for ICE Tables?
What is Molarity?
Which equation can be used to determine the pH of a buffer solution only?
(Extra 50 points if you can pronounce the name)
Henderson-Hasselbalch
In regards to Molarity, the more _____ the buffer components, the less effective the buffer
What is “dilute” ?
With a weak:strong titration, halfway to the equivalence point, the pH is equal to the ____
What is pKa?
Percent Ionization
Percent ionization = [H3O+]equil/[HA]initial ✕ 100 = %
pH=
What is -log [H3O+]?
What change in the pH do we see when adding a small amount of strong acid to a buffer?
What is Decreases pH?
What is the definition of buffering capacity?
What is The amount of acid or base a buffer can neutralize?
The pH of the equivalence point for a weak acid : strong base titration is _____ than 7.
What is “Greater” ?
Kw
Kw = [H3O+][OH−], where Kw = 1 ✕ 10−14
The key phrase “before the addition of” tells us to use which table?
What is an ICE Table?
What change in the pH do we see when adding a small amount of strong base to a buffer?
What is Increases pH?
What is the definition and value of buffering range?
What is the pH range in which the buffer can be effective?
What is pKa ± 1 ?
The pH of the equivalence point for a strong acid : weak base titration is ____ than 7.
What is “Less” ?
-log[OH-]
The key phrase “after addition of” tells us that we should use which table?
What is BAA table?