Study Set Content:
Hypochlorous Conjugate base
OCl-
Hydrocyanic Conjugate base
CN-
Phenol Conjugate base
C6H5O-
Chlorous Ka
1.0 x 10-2
Hydroflouric Ka
6.8 x 10-4
Nitrous Ka
4.5 x 10-4
Benzoic Ka
6.3 x 10-5
Acetic Ka
1.8 x 10-5
Hypochlorous Ka
3.0 x 10-8
Hydrocyanic Ka
4.9 x 10-10
Phenol Ka
1.3 x 10-10
The greater the value f Ka, the (blank) is the acid
stronger
used to determine pH aqueous
solutions which are not colored or
turbid
colorimetric
colorimetric
pH paper
○ Clark-Lube buffers
○ Colors of buffers of known
pH are matched with the
color of the unknown solution
use of pH meter
potentiometric
compounds or mixtures of
compounds that, by their presence
in solution, resist changes in pH
upon the addition of small quantities
of acid or alkali
Buffer
the resistance to a change in pH
Buffer action
giving H+
Acid
receptor H+
Base
For a weak acid and its salt:
Henderson-Hasselbalch Equation
