Why wash water in experiment limiting reagent has to be kept warm at 80-90 degree celcius . Explain why
Note the correct spelling of celsius.
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In experiments involving a limiting reagent, it is essential to wash the resulting precipitate to remove impurities and unwanted by-products. The use of warm water at a temperature between 80-90 degrees Celsius (176-194 degrees Fahrenheit) can enhance the effectiveness of the washing process. Here's why:
1. Increased solubility: Heating the wash water increases its solubility, allowing it to dissolve more of the impurities and by-products. This helps to ensure thorough and efficient removal of contaminants from the precipitate.
2. Faster diffusion: The elevated temperature promotes faster diffusion of the impurities from the precipitate into the wash water. Diffusion is the process by which molecules move from an area of higher concentration to an area of lower concentration. By increasing the temperature, the rate of diffusion increases, making the washing process quicker.
3. Enhanced cleaning action: Warm water has better cleaning properties compared to cold water. The higher temperature enhances the effectiveness of detergents or cleaning agents that may be used in the washing process. It helps to break down and remove stubborn impurities more efficiently, resulting in a cleaner precipitate.
4. Better removal of water-soluble impurities: Many impurities are water-soluble, meaning they dissolve in water. By using warm water, these water-soluble impurities can be dissolved more readily and carried away during the washing process. This helps to minimize their presence in the final precipitate.
It is important to note that the specific temperature range (80-90 degrees Celsius) mentioned may vary depending on the nature of the experiment, the reagents used, and the desired level of purity. Always refer to the experimental procedure or guidelines for the recommended temperature for washing the precipitate.