Precipitation Titration

Precipitation Titration

a volumetric analytical method in which a titrant reacts with the analyte to form an insoluble precipitate, and the endpoint is detected when precipitation is complete

Appearance of red color

Endpoint detection in using Ferric Ammonium Sulfate as indicator

Forms red precipitate of Silver chromate

Endpoint detection in using Potassium Chromate as indicator

Dichlorofluorescein

Adsorption indicators

○ ______________ (DCF)

○ Eosin y

○ Tetrabromophenolphthalein ethyl ester (TEE)

Eosin y

Adsorption indicators

○ Dichlorofluorescein (DCF)

○ ______

○ Tetrabromophenolphthalein ethyl ester (TEE)

Tetrabromophenolphthalein ethyl ester

Adsorption indicators

○ Dichlorofluorescein (DCF)

○ Eosin y

○ ________________________________ (TEE)

Neutral Solutions

Mohr’s Method is best for

Acidic Solutions

Volhard and Gay-Lussac’s Methods are best for

Cyanide determination

Liebig’s Method is best for

Dilute halides

Fajan’s Method is best for

AgNO3

Volumetric Solution for Mohr’s Method

K2CrO4

Indicator for Mohr’s Method

NaCl

Primary Standard for Mohr’s Method

SLS

Example of Mohr’s Method

Brick Red 2nd Precipitate

Endpoint for Mohr’s Method

Ammonium thiocyanate

Volumetric Solution for Volhard’s Method

Ferric ammonium sulfate

Indicator for Volhard’s Method

AgNO3

Primary Standard for Volhard’s Method

Aminophylline

Examples of Volhard’s Method

• ____________

• NaCl

NaCl

Examples of Volhard’s Method

• Aminophylline

• ____

Colored precipitate

Endpoint for Volhard’s Method

AgNO3

Volumetric Solution for Gay-Lussac’s Method

NaCl

Primary Standard for Gay-Lussac’s Method

NaCl

Example of Gay-Lussac’s Method

Cessation Of Precipitate

Endpoint for Gay-Lussac’s Method

Na Tetraphenylboron

Volumetric Solution for Liebig’s Method

Bromophenol blue

Indicator for Liebig’s Method

K biphthalate

Primary Standard for Liebig’s Method

Organic N compounds

Example of Liebig’s Method

Appearance of turbidity

Endpoint for Liebig’s Method

AgNO3

Volumetric Solution for Fajans’ Method

DCF, EOSIN Y, TEE

Indicators for Fajans’ Method

NaCl

Primary Standard for Fajans’ Method

Phenylephrine

Examples of Fajans’ Method

• ___________

• Tubocurarine

Tubocurarine

Examples of Fajans’ Method

• Phenylephrine

• ____________

Change In Color of Precipitate

Endpoint for Fajans’ Method

Gay-Lussac

a self-indicating method

keratolytic

Silver Nitrate is used as ________. It is also antbacterial

improvised explosive device

Silver nitrate is regulated because it is used as

bronchodilator

Aminophylline is a ____________

asthma

Aminophylline is used as treatment for

Sodium Lauryl Sulfate

SLS stands for

irrigation

NaCl is an electrolyte replenisher. It is also used for ______.