All Flashcards
Compare strong acids and weak acids.
Strong acids: completely dissociate in water, high | Weak acids: partially dissociate, lower
Compare strong bases and weak bases.
Strong bases: completely dissociate in water, high | Weak bases: partially dissociate, lower
Compare pH and pOH.
pH: measures acidity, pH = -log | pOH: measures basicity, pOH = -log
Compare and .
: acid dissociation constant, measures acid strength | : base dissociation constant, measures base strength
Compare equivalence point and half-equivalence point in a titration.
Equivalence point: acid and base have completely reacted | Half-equivalence point: pH = pKa (weak acid), pOH = pKb (weak base)
What is the effect of adding acid to a buffer solution?
The buffer resists the change in pH by reacting with the added acid.
What is the effect of adding base to a buffer solution?
The buffer resists the change in pH by reacting with the added base.
What happens to pH as increases?
pH decreases (becomes more acidic).
What happens to pOH as increases?
pOH decreases (becomes more basic).
What happens to the pH at half equivalence point?
pH = pKa
What happens to the pH at equivalence point?
The number of moles of acid and base are equal, so the pH depends on the strength of the acid and base.
How do you calculate pH from ?
pH = -log
How do you calculate pOH from ?
pOH = -log
How do you calculate from ?
How do you calculate from ?
Describe the process of titration.
A solution of known concentration (titrant) is added to a solution of unknown concentration (analyte) until the reaction is complete, usually indicated by a color change or pH meter.
How to determine pH using the Henderson-Hasselbalch equation?
pH = pKa + log, where is the concentration of the conjugate base and is the concentration of the weak acid.