Analytical Chemistry Final Questions With Complete
Solutions
A _______ is produced when a metal ion coordinates (complex)
with two or more donor groups of a single ligand to form a five
or six-membered heterocyclic ring.
monodentated, bidentated, hexadentated, chelate Correct
Answers chelate
A 50.0 mL transfer pipet always delivers 50.042 +/- 0.004 mL.
What type of error is associated with this pipet? Correct
Answers systematic and random error
A bidentate ligand is, Correct Answers 1
A high equivalent weight is desirable for compounds used as
primary standards because Correct Answers weighing error is
minimized
A strong acid Correct Answers completely dissociate in water
A student weighs his unknown sample on an uncalibrated
balance and obtains a weight of 1.055 g. If the true weight of the
unknown is 1.0755 g, what is the % relative error in his weight
measurement? Correct Answers -1.86%
A student weighs his unknown sample on an uncalibrated
balance and obtains a weight of 1.0555 g. The % relative error in
his weight measurement was determined to be -1.86%. What is
, the type of error associated with his measurement? Correct
Answers determinate
A typical metal-ion indicator that is used in the titration of
several common cations is Correct Answers Eriochrome black
T
According to Beer's Law, absorbance is not dependent on
__________.
absorptivity coefficient of the sample
color of solution
solution concentration
distance that the light has traveled through sample Correct
Answers color of solution
According to the following figure, an adequate end-point for the
titration of calcium with EDTA requires a pH of Correct
Answers 10 or greater ??? (or 8?)
According to the following figure, what is the minimum pH
required for a satisfactory end-points determination of Mn2+ in
compleximetric titration? Correct Answers between 8-10
Accuracy is expressed as Correct Answers relative error
An example for an amphiprotic species is
(CO3)2-, CH3OH, HS-, NH3 Correct Answers HS- (can act as
acid or base)
Solutions
A _______ is produced when a metal ion coordinates (complex)
with two or more donor groups of a single ligand to form a five
or six-membered heterocyclic ring.
monodentated, bidentated, hexadentated, chelate Correct
Answers chelate
A 50.0 mL transfer pipet always delivers 50.042 +/- 0.004 mL.
What type of error is associated with this pipet? Correct
Answers systematic and random error
A bidentate ligand is, Correct Answers 1
A high equivalent weight is desirable for compounds used as
primary standards because Correct Answers weighing error is
minimized
A strong acid Correct Answers completely dissociate in water
A student weighs his unknown sample on an uncalibrated
balance and obtains a weight of 1.055 g. If the true weight of the
unknown is 1.0755 g, what is the % relative error in his weight
measurement? Correct Answers -1.86%
A student weighs his unknown sample on an uncalibrated
balance and obtains a weight of 1.0555 g. The % relative error in
his weight measurement was determined to be -1.86%. What is
, the type of error associated with his measurement? Correct
Answers determinate
A typical metal-ion indicator that is used in the titration of
several common cations is Correct Answers Eriochrome black
T
According to Beer's Law, absorbance is not dependent on
__________.
absorptivity coefficient of the sample
color of solution
solution concentration
distance that the light has traveled through sample Correct
Answers color of solution
According to the following figure, an adequate end-point for the
titration of calcium with EDTA requires a pH of Correct
Answers 10 or greater ??? (or 8?)
According to the following figure, what is the minimum pH
required for a satisfactory end-points determination of Mn2+ in
compleximetric titration? Correct Answers between 8-10
Accuracy is expressed as Correct Answers relative error
An example for an amphiprotic species is
(CO3)2-, CH3OH, HS-, NH3 Correct Answers HS- (can act as
acid or base)
