What is titration? Comprehensive Chemistry Guide

Collection: Why, because and how

What is titration

Get to know the titration: A simple technique with accurate results

Title is a common quantitative/chemical analysis that is used in laboratories to determine the unknown concentration of a known reactive (analytical). This method is based on the chemical reaction between a standard solution (titration) and the analysis solution.

Titration is one of the oldest methods of content determination in chemistry and is often used in chemical decomposition. On the one hand, the titration is done relatively simple and fast; On the other hand, under ideal conditions, titration delivers a very precise result in minutes.

Types of titration

What is titration?

Title, commonly known as a titter, is a chemical qualitative analysis technique to determine the concentration of an analysis in a mixture. Titration, also known as volumetric decomposition, is an important technique in the field of decomposition chemistry.

Titration is a way to determine the concentration of one solution by reacting a certain volume of that solution with another solution with a concentration.

To determine the concentration of an acidic solution, head it with a well -known concentration game.

To determine the concentration of an unknown open, head it with an acidic concentration.

How to do titration

In a human being, a certain volume of an acidic solution or game with an unknown concentration is placed. The electrodes of a pH meter are placed in this solution and the initial pH of the solution is read and recorded.

A bureet is filled with a solution with a well -known concentration (standard solution or titration).

Subscribe to the measured values ​​of the standard solution to the human solution and mix. After each add, the pH is measured and recorded. This step is repeated until reaching a homogeneous point (the point where the number of H⁺ ion molers of acid is equal to the number of OH⁻ ion molecules).

Acid and Open Title

Title curve

The titration curve is a graph with the axis of the titration added from the beginning of the titration and the Y axis shows the concentration of the analysis in the relevant stages of the titration (in acid-scratch titration, the Y axis usually shows the pH of the solution).

The titration curve in the acid-scorching titration shows the corresponding acid and open openness. For a strong acid and a strong open, the curve is partly smooth and near the point of relatively sloping. As a result, a slight change in the volume of titration near the pedestrian point causes a major change in the pH and several indicators (such as lithmus, phenolfotaline or bromotimol blue) are appropriate.

Example: Strong Acid Titration with Strong Open

The sharp increase in the pH of acidic solution during the titration of a strong acid with a strong opening indicates the neutralization of all H⁺ acid ions by OH⁻ ions. The synchronization point of the titration is the point where the curve changes. Bromotimol Blu is a color index that changes color at this point.

Indicators such as phenolfothaline and methyl rejection do not change exactly at the same point, but the curved slope is so high that this is not important.

Types of titration

Acid-Base titration (acidic or alkalimetter)

Acid-scratch titration is mainly based on neutralization of an acid and an open in the solution. More importantly, the power of an acid is determined using a standard game solution. This process is known as acidic acid.

Acids are classified as strong or weak based on their separation in water. If an acidic solution is titled with a well -known concentration against a strong open open, the acid concentration is estimated after the neutralization reaction is completed. For this reason, only one strong opening is used in the titration process. In this case, the acidic titrate solution and the strong open openness of the headline or standard solution.

Double titration

In this type of titration, the titrate solution (with unknown concentration) contains more than one component.

The mixture of the mixture against a strong acid is performed to determine the mixing or evaluate the purity of a sample. However, two indicators are used instead of one index during titration, instead of one index. Indicators such as phenolfothaline and methyl oration are usually used.

Redox titration

These titles are similar to the volumetric acid-scratch titles, except that the reactions involved are Redox reactions. The focus here is on determining the unknown concentration of an reducing or oxidizing agent. The titration of oxidizing or reducing agents is performed against powerful or oxidizing factors. In most Redox titles, one of the reactions acts as an index (automatic index) and changes color depending on their oxidation mode.

Sedimentary titration

Sedimentary titration is a type of titration in which sediment is formed.

In sedimentary titration, titration reacts with the analysis and produces an insoluble material called sediment. This process continues until the full consumption of the analysis. This headline involves the production of sediment during the titration test. The analysis reacts with the titration and forms an insoluble material. The titration process is repeated until the last drop of analysis. When the head reaches its limit, it reacts to the index and shows the end of the titration process.

Title -resistant point

Hyper -collectation or kilatometry

Collexometer titration, also known as kilatometry, is a type of volume decomposition in which a color complex is used to determine the end point of the titration. Titration is a common method in laboratories to determine the unknown concentration of a predefined analysis and is a quantitative chemical decomposition method.

Complexometer titration involves identifying certain compounds of metal ions in the solution. By adding each drop of headline, the reaction reaches the balance rapidly and no interference occurs. Complexometer titration can accurately identify the same point. It is known that EDTA is used as titration.

What are the common questions about titration?

1. What is titration and what is the use of?

Titration is a quantitative chemical decomposition method used to determine the unknown concentration of a substance (analysis) in the solution. This technique is used in laboratories for careful analysis of chemicals.

2. What kind of reactions are in titration?

Titration is based on chemical reactions such as neutralization (acid-rose), redox, sedimentary or complexometry, each of which is suitable for a particular type of analysis.

3. What is the same point in titration?

The point is when the molar value of the headline (such as OH⁻ ions) is equal to the amount of molar analysis (such as H⁺ ions) and the reaction is complete.

4. What indicators are used in acid-scratch titration?

Indicators such as phenolfothaline, methyl urange, and bromotimol blules are used to identify an homogeneous point in acid-rose titration.

5. What is the difference between collection of collection of collection?

Complexometer titration uses color complexes to identify the endpoint and is usually used with EDTA to detect metal ions.

Conclusion

Title is a precise and used method of decomposition chemistry to determine the concentration of unknown material. This technique is widely used in laboratories because of its simplicity, speed and accuracy. Different types of titration, such as acid-rose, redox, sedimentary and complexometry, allow a wide range of materials to analyze. Using appropriate indicators and precise tools, titration provides reliable results for scientific and industrial research.

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