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Titration III

June 5, 2013

Titration III(chem)
There are many methods are used to determine the properties of a chemical substance. Titration calculation is one of the most important, reliable, and common method to determine the strength of the unknown solution from the known strength of the solution.

The strength of the solution can be either in terms of molarity, molality, normality, acidity, alkalinity, or perceptibility. They are done in liquid medium most commonly between clear solutions. It can also used to describe weather the elements presence in the form of elemental state or in the form of compound state. It can also used to estimate the absorption of the substances.

It is a common laboratory method of quantitative chemical analysis or volumetric analysis and is defined as, it is a process in which one of the solution is added to the another known volume solution such that it reacts under the given condition in which the added volume can be estimated accurately. It is also called as titrimetry. These processes are most commonly associated with acid-base reactions. The following titration equations are used to find the concentration and volume of unknown solution with a standard solution whose strength and volume is known.

V1M1 = V2M2

M2 =

Where,

V1 – Volume of the standard solution

M1 – Molarity of the standard solution

V2 – Volume of the unknown concentration solution

M2 – Molarity of the unknown concentration solution

The following formulas are very important to solve titration Problem,

Molarity (M) =

Molality (m) =

No of mole =

Normality (N) =

Equivalent mass (E) =

In titration calculation, the direct equation for the formula

Cuk =

Where,

Ck – Concentration of the known solution (mol/lit)

Vk – Volume of the known solution (lit)

X – Mole ratio

Cuk – Concentration of unknown solution (mol/lit)

Vuk – Volume of the unknown solution (lit)

In titration chemistry, the known concentration of solution is called as standard solution or titrant and the unknown concentration of unknown solution which is to be find is called as aliquot or titrate.

A reaction taking place in this process is equivalent proportion according to the stoichiometric equation. So the product of the volume and molarity, molality, or normality of the known solution is equal to that of the unknown solution at the equivalence point or point of titration.

The equivalence point is the point at which standard solution or titrant has been added in exactly right quantity to react stiochiometrically with the unknown solution or titrate. The amount of added solution is calculated from its concentration and volume.

n = C x V

Where,

n – Number of mole of standard solution (mol)

C – Concentration of the standard solution (mol/lit)

V – volume of the standard solution (lit)

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