Preparation and standardization molar and normal solutions of Ceric ammonium sulphate
Ceric ammonium sulfate, also known as ammonium cerium (IV) sulfate, is a chemical compound that is commonly used as an oxidizing agent in analytical chemistry. Here are the steps for preparing and standardizing molar and normal solutions of ceric ammonium sulfate:
Preparation of ceric ammonium sulfate solution:
- Weigh out the appropriate amount of ceric ammonium sulfate (CAS) into a clean and dry beaker or flask. The amount of CAS required will depend on the desired concentration of the solution.
- Add distilled water to the beaker or flask and stir until the CAS is completely dissolved.
- Transfer the solution to a volumetric flask and make up to the desired volume with distilled water.
- Mix the solution thoroughly.
Standardization of ceric ammonium sulfate solution:
- Weigh out a known amount of a standard reducing agent, such as ferrous ammonium sulfate (FAS) or oxalic acid.
- Dissolve the standard reducing agent in distilled water in a clean and dry beaker or flask.
- Add a few drops of indicator solution, such as diphenylamine sulfonate, to the beaker or flask.
- Titrate the standard reducing agent solution with the ceric ammonium sulfate solution until the endpoint is reached, as indicated by a color change in the indicator solution.
- Record the volume of ceric ammonium sulfate solution used in the titration.
- Repeat the titration at least two more times to ensure accuracy and consistency.
- Calculate the concentration of the ceric ammonium sulfate solution using the volume and concentration of the standard reducing agent solution.
Standardization of molar and normal solutions: To standardize a molar or normal solution of ceric ammonium sulfate, follow the same steps as for standardizing a regular solution, but calculate the concentration of the solution in terms of moles or equivalents of ceric ammonium sulfate per liter of solution, respectively.
Note: It is important to handle ceric ammonium sulfate with care, as it is a strong oxidizing agent and can be hazardous if not used properly. Always wear appropriate personal protective equipment and follow all safety protocols when working with this chemical.
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