Solution of accurately known concentration is called _________

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