Non aqueous titrations

Protophilic solvent will

• accept proton

• donate proton

protogenic solvent will

• accept proton

• donate proton

Non Aqueous titrations are useful in determination of:

• Very weak acids.

• Very weak bases.

• Insoluble substances

• All of them

Select the incorrect statement for non aqueous solvents

• Protophillic solvents possess high affinity for protons

• Protogenic solvents are acidic in nature

• Aprotic solvents do not promote ionisation

• a Aprotic solvents are called levelling solvents

Nonaqueous titrations are prefered for assay of all of the given sustances EXCEPT -

• too wealky acidic substances

• anions of weak acids

• water soluble metal ion salts

• too weakly basic substances

One of the following is a aprotic solvent used in non aqueous titration.

• Sulphuric acid

• Carbon tetrachloride

• Ethanoic acid

• Ammonia

Traces of water from perchloric acid and acetic acid are removed by addition of -------------

• Acetic anhydride

• Acetonitrile

• Acetone

• Acetanilide

In non aqueous titrations _________ is used as solvent for preparing standard 0.1N perchloric acid solution.

• Chloroform

• Anhydrous glacial acetic acid

• Ethanol

• Methanol

Sulphuric Acid is-------------Solvent

• Protophillic

• Protogenic

• Aprotic

• Apmphiprotic

Assay of Ephidrine is example of-----------

• Non aqueous acidimetric titrations

• aqueous acidimetric titrations

• Non aqueous Alkalimetric titrations

• aqueous Alkalimetric titrations