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WorksheetsVolumetric Analysis
Total questions: 12
Worksheet time: 12mins
Solution of accurately known concentration is called (a)
Concordant results must be within___
0.1 cm3
1 cm3
0.1 L
0.01 cm3
A primary standard must ____. Tick all that apply.
be available in a high state of purity
be stable when solid and in solution
be soluble
have a reasonably high GFM
be a chromophore
Why is sodium hydroxide not a primary standard? Tick all that apply.
It has a relatively low GFM.
It is unstable as a solid (absorbs moisture).
It is not alkaline enough.
It is not soluble in water.
Sodium hydroxide solution must be standardised before being used in volumetric analysis.
TRUE
FALSE
What are the types of titration? Tick all that apply.
back titration
redox titration
complexometric titration
acid-base titration
rough titration
Titrations based on reactions between reducing and oxidising agents are called_______
back titrations
redox titrations
complexometric titrations
acid-base titrations
rough titrations
Tick all correct statements about EDTA.
EDTA is an important complexometric reagent
EDTA can be used to determine the concentration of metal ions in a solution
EDTA is a monodentate ligand
EDTA is a hexadentate ligand
Titrations based on reactions in which complexes are formed are called_______
back titrations
redox titrations
complexometric titrations
acid-base titrations
rough titrations
_______ can be used to find the number of moles of a substance by reacting it with an excess volume of a reactant of known concentration
back titration
redox titration
complexometric titration
acid-base titration
rough titration
Back titration is useful when trying to work out the quantity of substance in a solid with a low solubility.
TRUE
FALSE
During titration, the solution is dispensed from a ____ into a conical flask
burette
pipette
separating funnel
volumetric flask
