What i meant was I have already had the method in preparing the insoluble salt Pb(NO3)2 and KI and the soluble salt Sulphuric acid and copper oxide. What I need is the discussion of the method use or the procedure that you may have for this preparation the discussion for it?
To prepare the insoluble salt lead(II) iodide (PbI2), soluble salts lead(II) nitrate (Pb(NO3)2) and potassium iodide (KI) can be combined using the following procedure:
1. Start by preparing a saturated solution of lead(II) nitrate by dissolving an excess of lead(II) nitrate in a small amount of distilled water. Stir the mixture well until no more solid lead(II) nitrate remains undissolved.
2. Similarly, prepare a saturated solution of potassium iodide by dissolving an excess of potassium iodide in another small amount of distilled water. Stir the mixture well until no more solid potassium iodide remains undissolved.
3. Now, combine the two saturated solutions. Slowly pour the solution of lead(II) nitrate into the solution of potassium iodide while continuously stirring. A yellow precipitate of lead(II) iodide will form.
4. Allow the mixture to sit undisturbed for some time to let the precipitate settle. The settling time may vary, but a period of 15-30 minutes is usually sufficient.
5. After the precipitate has settled, carefully decant the clear liquid from the top, taking care not to disturb the settled precipitate at the bottom.
6. Wash the precipitate with distilled water to remove any impurities or remaining soluble salts. Slowly add distilled water to the precipitate, stir gently, and allow it to settle again. Repeat this washing process a few times until the washwater is clear. Be cautious not to lose any of the precipitate during the washing process.
7. Once the precipitate has been thoroughly washed, carefully decant the washwater each time, ensuring the precipitate remains in the container.
8. Finally, to dry the lead(II) iodide, transfer it to a filter paper or a clean, dry watch glass, and allow it to air dry completely. Make sure there is no moisture left before storing it in a dry airtight container.
By following this procedure, you should be able to prepare lead(II) iodide (PbI2) as an insoluble salt using lead(II) nitrate (Pb(NO3)2) and potassium iodide (KI) as starting materials.