1. Why is gravity filtration rather than suction filtration used to remove suspended impurities and charcoal from a hot solution?
2. Why is a fluted filter paper used in gravity filtration?
3. Why are stemless funnels used instead of long stem funnels to filter hot solutions through fluted filter paper?
4. Why is the final product from the recrystallization process isolated by vacuum filtration rather than gravity filtration?