Top topic this week
Back to FAQs
Related FAQs
Frequently Asked Question
Questions asked by users might not always be phrased in the clearest way.
TYPES of STANDARDIZATION
Accepted Answer
Types of Standardization
1. Direct Titration: In this method, the analyte is directly titrated with a standard solution of known concentration. The equivalence point is reached when the moles of analyte are equal to the moles of titrant added.
2. Back Titration: This method is used when the analyte reacts with excess standard solution. The unreacted standard solution is then titrated with a second standard solution of known concentration.
3. Indirect Titration: This method is used when the analyte cannot be directly titrated. Instead, the analyte is allowed to react with a known amount of a reagent that reacts with the analyte in a known stoichiometric ratio. The excess reagent is then titrated with a standard solution of known concentration.
4. Karl Fischer Titration: This method is used to determine the water content of a sample. A Karl Fischer reagent, which is a solution of iodine in methanol, is added to the sample. The water in the sample reacts with the iodine to form hydrogen iodide and iodine. The iodine is then titrated with a standard solution of sodium thiosulfate.
5. Potentiometric Titration: This method uses a potentiometer to measure the electromotive force (EMF) of the solution during titration. The equivalence point is reached when the EMF reaches a certain value.
6. Conductometric Titration: This method measures the electrical conductivity of the solution during titration. The equivalence point is reached when the conductivity of the solution changes abruptly.
1. Direct Titration: In this method, the analyte is directly titrated with a standard solution of known concentration. The equivalence point is reached when the moles of analyte are equal to the moles of titrant added.
2. Back Titration: This method is used when the analyte reacts with excess standard solution. The unreacted standard solution is then titrated with a second standard solution of known concentration.
3. Indirect Titration: This method is used when the analyte cannot be directly titrated. Instead, the analyte is allowed to react with a known amount of a reagent that reacts with the analyte in a known stoichiometric ratio. The excess reagent is then titrated with a standard solution of known concentration.
4. Karl Fischer Titration: This method is used to determine the water content of a sample. A Karl Fischer reagent, which is a solution of iodine in methanol, is added to the sample. The water in the sample reacts with the iodine to form hydrogen iodide and iodine. The iodine is then titrated with a standard solution of sodium thiosulfate.
5. Potentiometric Titration: This method uses a potentiometer to measure the electromotive force (EMF) of the solution during titration. The equivalence point is reached when the EMF reaches a certain value.
6. Conductometric Titration: This method measures the electrical conductivity of the solution during titration. The equivalence point is reached when the conductivity of the solution changes abruptly.
Articles you might like