Final answer:
The question pertains to the chemistry practice of washing crystallized products to remove impurities, using a vacuum filter funnel and cold solvent which maintains the integrity of the crystals while removing adhering impurities.
Step-by-step explanation:
The question appears to be incomplete, but it suggests a context related to chemistry laboratory practices, specifically the process of washing crystallized products using a vacuum filter funnel. The washing step in crystallization is critical for purifying the product by removing impurities that may be adhering to the crystal surface. To accomplish this, you'd typically pour a small amount of cold solvent over the crystals after they've been collected on the filter. The solvent should ideally be the same as the one used for crystallization to prevent dissolving the product. The solvent passes through the crystals and the filter, carrying away impurities.
To ensure effective washing of the crystallized product, start by transferring the product to the vacuum filter funnel. Apply the vacuum to the system to aid in the filtration process. Slowly pour the chilled solvent over the crystals. Allow the solvent to pass through completely before repeating the wash if necessary. This process helps to enhance the purity of the crystallized compound by removing any remaining soluble impurities.