Titration

Titration there are times when people refer to as the volumetric method, this is due to the volume of solution in the titration measurements play an important role. From taking a particular analyte by the volume until the reading of the volume of titrant used for titration's end affect all the results of the analysis. Therefore, the proper use of equipment in the titration also should not be overlooked.Volumetry method differentiated the types of reactions involved between titrant and analyte are:Acid-Base. There are a lot of acid and alkaline compounds which can be determined by titration. Both strong acid or strong base, the end point titrasipun very easily observed with the use of acid-base indicators such as fenolphtalein (PP), red metal, metallic orange, and others. At the equivalent point obtained, the solution is neutral but with a little addition of titrant to reach the end point of titration is enough to change the color of acid-base indicator. Another way is to use pHmeter. Weak acid and weak base can also be titrated as well as the organic acid is titrated with non-water solvent.Reduction-Oxidation. Substances that are oxidizing agents such as KMnO4, K2CrO4, I2, and substances that are reducing agents such as H2C2O4, Fe2, Sn2 can be determined by this titration method. Redox reactions involved as titrant and analyte react. Some of the redox titration method does not require the indicator to look like a titration end point titration of KMnO4 and H2C2O4 caused KMnO4 itself is colored. Amylum usually used for titrations involving I2.Kompleksometri. Complex formation reaction between EDTA and metal ions underlies this method. EDTA is a widely used type of titrant for titration kompleksometri and react with many metals, reaksinyapun can be controlled by controlling the pH of the solution.Precipitation. Reaction formation of sediment form the basis of this method. Titrant and analyte react to form a precipitate, such as the determination of chloride ion using AgNO3 titrant. Indicators can be used to determine the end point titration for example K2CrO4 for titration using silver nitrate titrant.