Selasa, 08 Juni 2010

Tetrameter

One chemical called Tetrameter examination, ie examination of the number of substances which are based on measuring the volume of the reaction solution needed to react stoichiometrically with substances that have been determined. Tetrameter or volumetric analysis is one method of checking a large number of chemical usage. This is due to several reasons. On the one hand, this way is profitable because its implementation is easy and fast, precision and accuracy is high enough. On the other hand, how does this benefit because it can be used to determine levels of various substances to which have different properties. Basically this means Tetrameter consists of measuring the volume of the reaction solution needed to react stoichiometrically with the substance to be determined. Reagent solution was usually known concentration with certainty, and called pen titer or standard solution. While the process of adding pen titer into solution substances that will be determined is called titration. In the process section by section pen titer added to a solution of substances to be determined with the aid of a tool called the Biuret so as to achieve equivalence point.

Equivalence point is the point at the specified reagents and substances react stoichiometrically perfect. Titration should be discontinued on or near the point of this equivalence. The total volume of unused pen titer to reach the point of equality is called the volume pen titer equality. By knowing the volume of equality, pen titer concentration and stoichiometric factor, then the number of prescribed substances can be calculated easily. Around the point of equality, as a result of interaction between substances that are determined by pen titer, system properties change sharply, the properties that changed it certainly can be a fiber optic, chemical, or electrochemical properties. Changes in these properties can be used to specify the location of the equivalence point.

Very often analyzed substantially with the addition of solution of known concentration and the reaction took place quantitatively at substantially this analysis. If possible mix volume added into the solution reacts with all the analysis substance sufficient in the sample, and then the sample concentration can be calculated. Analysis of this kind, where the critical mixture of volume is needed when analyzing, classified as volumetric analysis. The process by which solutions of known concentration is added to the solution of known concentration will be referred to as a titration process. Knowledge of the solution is very important because the greater the chemical and biological reactions occur in the form of liquids, especially in the form of a solution with solvent water. Solution can be defined by a homogeny system consisting of two or more components. The terms solvent and solute could actually exchanged, but the term usually used for liquid solvent, if the solution consists of the solids in the liquid or gas. This term for other types of solutions commonly used to express the substance contained in a larger quantity. Components are much less common is called the solute.

All gases can be mixed with each other. Therefore, all the gas mixture is a solution. Liquids in general can dissolve a variety of other liquids solids and gases can form a solution. When the solvent water, the solution formed is known as a solvent solution with water. Condensation is formed when the gases, liquids or other solids dissolved in solution. Solid solution is not very important in biological systems, but it is very important in metallurgy.






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