CONDUCTOMETRY PRINCIPLE PDF

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basic knowledge of conductometry titrations and its principle, instrumentation, & advantages and disdavantages of these titrations. Conductometry DR. . 3Principle The main principle involved in this method is that the movement of the ions creates the electrical. Conductometry-. Introduction. Ohm’s law. Conductometric measurements. Factor affecting conductivity. Application of conductometry. tometric titration.

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In Folin and Flanders titrated the acidic substances by using the non-aqueous solvents such as benzene, chloroform and chloroform-methanol mixture.

Pharmaceutical Analysis by P. D. Chaithanya Sudha

For example, magnesium sulphate is titrated with the barium hydroxide and forms two precipitates: The steps involved in the non-aqueous titrimetric method are proposed by the Tomicek. Weak pginciple with strong base titration curve. Hence the non-aqueous titrimetric method is used. Initially the addition of the silver nitrate to the potassium chloride shows condictometry stability in the conductivity and the excess of the silver nitrate addition increases the conductivity because of the formation of the single precipitate.

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The movement of the ions is mainly depended on the concentration of the ions. Size of the ions: Unknown 5 December at When compared to the acid—base titrations, precipitate titrations are not that much accurate because of the more number of the interferences.

The value is 0. The sample solution is conductojetry in the conductivity cell at constant temperature. Strong electrolytes completely dissociate into ions and have high conductance. Appropriate for the dilute solutions. Used in the determination of the basicity of the acids.

The temperature is maintained constant with the help of the thermostat.

In this type, the cell is dipped in the sample solution to measure the conductance in the titrations. What are the different types of conductometric titrations?

2. Conductometry – Pharmaceutical Analysis [Book]

Then the conductivity of the solution is measured by the following equation: Because the high concentrations are not measured by the conductometric titrations.

Vorlander first proposed the non-aqueous titration method that is titration of aniline with the HCl in non-aqueous solvent, that is, benzene. Cell constant is defined as the conductivity of the cell: What are the different types of applications of conductometry? Then the molar conductivity is defined as the conductivity due to 1 mole and it is expressed by the following formula: Weak acid with weak base titration curve.

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The reaction mechanism was first proposed by Peter Griessin. After completion of the reaction, the excess addition of the NaOH shows the increase in the conductivity.

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That is the increase in the size of the ions increases the conductivity. Unsourced material may be challenged and removed. Used in the determination of the ionic product of the water. The main principle …. Then it shows the gradual increase in the conductivity by the addition of excess titrant.

Conductometry – Wikipedia

They are made up of glass fitted with the platinum electrodes. No need of indicator. This is because of the ions mobility by increasing the temperature. End point is determined by plotting the graph.