Answer :
Final answer:
To counteract crystals forming during hot filtration, increase the temperature and add more hot solvent if necessary. Maintain the heat to keep substances dissolved and cool the solution slowly post-filtration for optimal crystal growth.Correct option a) Increase the temperature
Explanation:
If you observe crystals forming in the filter paper or funnel during a hot filtration, the recommended response is to increase the temperature. Crystals on filter paper can impair filtration efficiency and lead to material loss, while crystals in the funnel's stem can obstruct the filtration process. Additionally, you may add more hot solvent to ensure the substances remain in solution during the filtration process. It is critical to maintain the solution's temperature to avoid premature crystallization. After hot filtration, allow the solution to cool slowly to promote the formation of well-defined crystals.
Remember that when conducting a crystallization, it is crucial to use appropriate techniques such as using a watch glass to trap heat, setting the flask on an insulating material, and cooling slowly to enhance crystal growth and overall yield. If the hot filtration still encounters issues with crystallization, it may be necessary to re-dissolve the solid in a minimal amount of hot solvent and attempt the filtration again or use other techniques as mentioned in the guidelines provided by the crystallization process.
