Page | 1
UBC CHEM 211 1/3 2026 LATEST
QUESTIONS AND ANSWERS| ACE
YOUR GRADES.
Efficacy - correct answer -Maximum effect a drug can produce
Potency - correct answer -The amount of drug needed to
produce a certain effect. The lower the amount needed, the
higher the potency.
pH effect on solubility - correct answer -For a sparingly soluble
salt of a weak base, MA, the solubility increases as pH
decreases.
- At pH values less than the pKa of the conjugate acid the acid-
base equilibrium shifts strongly in favour of the conjugate acid,
which pulls more dissociated salt into solution.
Effect of Complex Formation on Solubility - correct answer -The
solubility of a precipitate increases in the presence of an agent
that can complex the cation. The complexing agent helps to pull
the precipitate into solution.
, Page | 2
Effect of Complex Formation on Solubility (2) - correct answer -A
large excess of halide will not necessarily precipitate the
maximum amount of silver.
Precipitation Titrimetry - correct answer -Useful for determination
of:
- halide and halide like anions
- Divalent inorganic ions
-mercaptans
- fatty acids
Precipitant (Precipitation Titrimetry) - correct answer -Silver
nitrate solution in buret
Equivalence Point (Precip Titrimetry) - correct answer -Amount
of silver added is equal to amount of analyte
End Point - correct answer -Observable change that
approximately signals the equivalence point.
UBC CHEM 211 1/3 2026 LATEST
QUESTIONS AND ANSWERS| ACE
YOUR GRADES.
Efficacy - correct answer -Maximum effect a drug can produce
Potency - correct answer -The amount of drug needed to
produce a certain effect. The lower the amount needed, the
higher the potency.
pH effect on solubility - correct answer -For a sparingly soluble
salt of a weak base, MA, the solubility increases as pH
decreases.
- At pH values less than the pKa of the conjugate acid the acid-
base equilibrium shifts strongly in favour of the conjugate acid,
which pulls more dissociated salt into solution.
Effect of Complex Formation on Solubility - correct answer -The
solubility of a precipitate increases in the presence of an agent
that can complex the cation. The complexing agent helps to pull
the precipitate into solution.
, Page | 2
Effect of Complex Formation on Solubility (2) - correct answer -A
large excess of halide will not necessarily precipitate the
maximum amount of silver.
Precipitation Titrimetry - correct answer -Useful for determination
of:
- halide and halide like anions
- Divalent inorganic ions
-mercaptans
- fatty acids
Precipitant (Precipitation Titrimetry) - correct answer -Silver
nitrate solution in buret
Equivalence Point (Precip Titrimetry) - correct answer -Amount
of silver added is equal to amount of analyte
End Point - correct answer -Observable change that
approximately signals the equivalence point.
