51.Kinetics can be studied by titration using:(a) 'H_(2)C_(2)O_(4)' (b...
Titration for studying kinetics
Introduction
Titration is a widely used technique in chemistry to determine the concentration of a substance in a solution. It involves the controlled addition of a solution of known concentration (titrant) to a solution of unknown concentration (analyte) until the reaction between the two is complete. In the context of studying kinetics, titration can be used to determine the rate of a reaction by measuring the time taken for the reaction to reach completion.
Choice of titrants for studying kinetics
There are several titrants that can be used to study kinetics, but in this case, we will focus on three commonly used ones: oxalic acid (H
2C
2O
4), potassium permanganate (KMnO
4), and sodium thiosulfate (Na
2S
2O
3).
1. Oxalic acid (H2C2O4)
Oxalic acid is a strong reducing agent and can be used as a titrant in redox reactions. It is commonly used to determine the concentration of a reducing agent in a solution. By measuring the volume of oxalic acid required to react completely with the analyte, the rate of the reaction can be determined. The reaction between oxalic acid and the analyte can be followed by using an indicator or by monitoring a physical change such as color change.
2. Potassium permanganate (KMnO4)
Potassium permanganate is a strong oxidizing agent and is commonly used as a titrant in redox reactions. It can be used to determine the concentration of a reducing agent in a solution. The reaction between potassium permanganate and the analyte can be followed by using an indicator or by monitoring a change in color. The rate of the reaction can be determined by measuring the volume of potassium permanganate required to react completely with the analyte.
3. Sodium thiosulfate (Na2S2O3)
Sodium thiosulfate is a common titrant used in reactions that involve the formation of a precipitate. It is often used to determine the concentration of an oxidizing agent in a solution. The reaction between sodium thiosulfate and the analyte can be followed by monitoring the disappearance of a precipitate or by using an indicator. The rate of the reaction can be determined by measuring the volume of sodium thiosulfate required to react completely with the analyte.
Conclusion
Titration is a versatile technique that can be used to study the kinetics of various reactions. By choosing the appropriate titrant and carefully monitoring the reaction, the rate of the reaction can be determined. In the case of studying kinetics, oxalic acid, potassium permanganate, and sodium thiosulfate are commonly used titrants. Each of these titrants is suitable for different types of reactions and can provide valuable information about the rate of the reaction being studied