WorksheetsBiochem Final (praise be)
Total questions: 6
Worksheet time: 3mins
Define pKa
an acid's tendency to ionize
dissociation constant
he pH at which the neutral functional group exchanges a proton with the solution
the negative log of the concentration of protons in a solution
Define pH
the negative log of the concentration of protons in a solution
level of acidity
when the neutral functional group exchanges a proton with the solution
Which of the following would be the strongest acid?
formic acid, pKa = 3.75
succinic acid, a diprotic acid with pKa = 4.21 and 5.64
acetic acid, pKa = 4.76
ammonium ion, pKa = 9.25
cannot be determined from the given information
Identify the Henderson-Hasselbalch equation
pH= pKa + log [A-/HA]
pKa= pH + log [A-/HA]
pH= pKa - log [A-/HA]
pH= pKa + log [HA/A-]
When the pH of a solution is less than the pKa of a functional group, the functional group is ____________.
protonated
deprotonated
When the pH of a solution is greater than the pKa of a functional group, the functional group is ____________.
protonated
deprotonated
