Questions
277
(25) Briefly comment on gravimetry in relation to the use of standards, calibration and the ways of expressing results.
(26) What are the generic elements of the mathematical expression that allows
one to obtain the result of a quantitative analysis by use of a calculable
method? Give meaningful examples.
(27) Briefly discuss procedural approaches to determining the analyte concentration from mass measurements.
(28) What are the most salient differences between the two types of relative
methods? Give several examples.
(29) Why does the gravimetric technique involve measuring at least two masses?
Use meaningful examples to explain it.
(30) Establish similarities and differences between physical metrological
methods and absolute chemical methods.
(31) Why is whether the precipitated form coincides with the weighed form so
important in gravimetry?
(32) What requirements must the precipitated form and the weighed form meet
in gravimetry?
(33) What are the generic differences between gravimetry and coulometry?
(34) Compare the gravimetric factor and the Faraday in the context of calculable
methods.
(35) What is titrimetric standardization?
(36) Why is isotope dilution mass spectrometry not a purely absolute method?
Why is it not stoichiometric?
(37) Why is the gravimetric factor related to sensitivity in gravimetries?
(38) Distinguish the two methodological approaches to coulometry.
(39) Compare titrimetries and gravimetries in metrological terms. Comment on
any practical differences between the two.
(40) Why can classical techniques not be considered relative quantitation
methods?
(41) What is the difference between automatic and automated titrimetries?
(42) Compare direct titrations and back-titrations in metrological terms.
( 43) Why are there two general types of titration curve?
(44) In what way is the titration curve related to end-point indication?
(45) What are the differences between interpolation and extrapolation
methods?
(46) What types of standards are used to construct the calibration curve?
(47) What are the differences between interpolation and comparative methods?
(48) What is the most salient advantage of relative methods involving multiple
additions of an analyte standard to a number of sample aliquots?
(49) What type of instrumental technique uses comparative methods most
frequently?
(50) Compare quantitation methods using analytical chemical standards containing the analyte and the types of calibration involved.
277
(25) Briefly comment on gravimetry in relation to the use of standards, calibration and the ways of expressing results.
(26) What are the generic elements of the mathematical expression that allows
one to obtain the result of a quantitative analysis by use of a calculable
method? Give meaningful examples.
(27) Briefly discuss procedural approaches to determining the analyte concentration from mass measurements.
(28) What are the most salient differences between the two types of relative
methods? Give several examples.
(29) Why does the gravimetric technique involve measuring at least two masses?
Use meaningful examples to explain it.
(30) Establish similarities and differences between physical metrological
methods and absolute chemical methods.
(31) Why is whether the precipitated form coincides with the weighed form so
important in gravimetry?
(32) What requirements must the precipitated form and the weighed form meet
in gravimetry?
(33) What are the generic differences between gravimetry and coulometry?
(34) Compare the gravimetric factor and the Faraday in the context of calculable
methods.
(35) What is titrimetric standardization?
(36) Why is isotope dilution mass spectrometry not a purely absolute method?
Why is it not stoichiometric?
(37) Why is the gravimetric factor related to sensitivity in gravimetries?
(38) Distinguish the two methodological approaches to coulometry.
(39) Compare titrimetries and gravimetries in metrological terms. Comment on
any practical differences between the two.
(40) Why can classical techniques not be considered relative quantitation
methods?
(41) What is the difference between automatic and automated titrimetries?
(42) Compare direct titrations and back-titrations in metrological terms.
( 43) Why are there two general types of titration curve?
(44) In what way is the titration curve related to end-point indication?
(45) What are the differences between interpolation and extrapolation
methods?
(46) What types of standards are used to construct the calibration curve?
(47) What are the differences between interpolation and comparative methods?
(48) What is the most salient advantage of relative methods involving multiple
additions of an analyte standard to a number of sample aliquots?
(49) What type of instrumental technique uses comparative methods most
frequently?
(50) Compare quantitation methods using analytical chemical standards containing the analyte and the types of calibration involved.