Answer :
Final answer:
The appearance of the filter paper can change depending on the substances being filtered.
Explanation:
The appearance of the filter paper changes during the procedure depending on the substances being filtered. For example, if the filter paper is used to filter a colored solution, the paper may become stained with the color of the solution. If the filter paper is used to filter a solid precipitate, it may become coated with the solid particles, making it appear dirty or discolored.
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The filter paper's appearance changes during filtration as solid material becomes entrenched on its surface, making it difficult to separate them afterward.
The appearance of the filter paper changes significantly during the filtration procedure. After the solid material is filtered out, it becomes stuck on the filter paper, altering its appearance. During hot filtration, unfolded fluted filter paper (Figure 1.84c) can become coated with the solid, making it difficult to fully separate the paper from the solid afterward. In gravity filtration, the filter paper is folded into a cone and placed in a funnel; this cone is then dampened to form a tight seal. Post filtration, the filter paper, now holding the precipitate, can be difficult to dry to a constant weight because filter paper is hygroscopic. When precision is necessary, the filter paper and precipitate are moved to a crucible.
