How would you prepare pure dry crystals of potassium trioxocarbonate (v)
I think you can heat K2CO3 up to 110 C without decomposition. Spread crystals out on a watch glass and heat at 110 for 2 Hrs. Cool in a desiccator.
To prepare pure dry crystals of potassium trioxocarbonate (V) (also known as potassium carbonate), you can follow these general steps:
1. Gather the necessary materials and equipment: You will need potassium hydroxide (KOH) and carbon dioxide (CO2) as starting materials, as well as a heat source, such as a Bunsen burner or a hot plate, and a suitable container, such as a crucible or an evaporating dish.
2. Start by creating a concentrated potassium hydroxide solution: Dissolve a significant amount of potassium hydroxide (KOH) in distilled water, stirring until fully dissolved. The concentration of the solution will depend on the desired amount of potassium trioxocarbonate (V) crystals you want to obtain.
3. Generate carbon dioxide (CO2): Carbon dioxide is needed to react with the potassium hydroxide solution to form potassium trioxocarbonate (V). There are several methods to generate carbon dioxide, including the reaction between an acid and a carbonate or bicarbonate, or using a carbon dioxide generator, such as a dry ice bath or a limestone (calcium carbonate) and hydrochloric acid reaction.
4. Add the carbon dioxide to the potassium hydroxide solution: You can pass a slow stream of carbon dioxide gas through the potassium hydroxide solution using a gas delivery tube, or use a carbon dioxide generator to bubble the gas directly into the solution. The reaction between potassium hydroxide and carbon dioxide will produce potassium trioxocarbonate (V), water, and some heat.
5. Evaporate the water: Once the reaction is complete, you will have a mixture of potassium trioxocarbonate (V) and water. To obtain pure dry crystals, you need to evaporate the water. Transfer the solution to a suitable container, such as a crucible, and heat it gently on a Bunsen burner or a hot plate. The water will gradually evaporate, leaving behind the solid potassium trioxocarbonate (V) crystals.
6. Allow the crystals to cool and dry: Once all the water has evaporated, turn off the heat and let the container with the crystals cool to room temperature. This will allow the potassium trioxocarbonate (V) crystals to dry and solidify completely.
7. Collect and store the pure dry crystals: Once the crystals have cooled and dried, carefully remove them from the container using a spatula or any suitable tool. Store the pure dry crystals of potassium trioxocarbonate (V) in a labeled, airtight container to avoid moisture absorption.
It is important to note that handling chemicals and conducting experiments involving heat sources can be dangerous if not done properly. Always follow proper safety precautions, have adequate ventilation, and if needed, seek guidance from an experienced chemist or educator.