Font size
WorksheetsLecture 1 & Lecture 2 Pop-Quiz
Total questions: 10
Worksheet time: 4mins
Choose one analysis which is not a qualitative analysis.
Determine the colour changes in the solution.
Determine the mass of Pb in PbO.
Determine the presence of precipitate in the solution.
Determine the smell of a solution.
5.65 g of NaCl was dissolved in the 0.25 L of distilled water. What is the w/v % of NaCl solution?
0.023 %
0.23 %
2.26 %
22.6 %
Choose one unit that cannot be used for ppb
ng/g
ug/kg
ug/L
ug/mL
In a titration step, a H2SO4 solution of 0.65 M in 0.05 L need to be prepared from 3.5 M of H2SO4 solution. What is the volume of 3.5 M H2SO4 solution needed for the dilution process?
9.3 mL
12.3 mL
0.00093 L
0.0123 L
Which one is not included in the types of systematic error?
Instrumental error
Random error
Method error
Personal error
'Using a solvent with high volatile to reduce the presence of impurities'. Which process is suitable for the statement above?
Formation of precipitate
Filtration process
Washing process
Drying process
The process of coagulated particles revert to its original dispersed state. Select a suitable process that can describe the statement above
Agglomeration process
Nucleation process
Peptization process
Coagulation process
A diagram shows one of the types of coprecipitation process. Name the process.
Mixed-crystal formation
Occlusion
Mechanical entrapment
Surface adsorption
Choose the wrong statements about precipitation process
Mixing process of two analytes should form a precipitate in order to gravimetric analysis success.
Nucleation mechanism can occurs by two ways, either spontaneous nucleation or induced nucleation.
Granular precipitates can be formed by increase the temperature
Ideal precipitates must be in small size and sufficiently soluble.
Which statement is not describes the ideal standard solution?
Be sufficiently soluble
React rapidly with analyte
React more or less completely with the analyte
undergo a selective reaction with analyte
