Please answer the question No. 1-10. Do not mind the upper portion. Thank you.

LAB REPORT EXPERIMENT 2 Recrystallization: Purification of Crystalline Organic Compounds Calculation or Yield In a recryatalization proeod tecovered is the weight of the erude manple. lo fact, only a fraction of this shmple is obtained at purified erystals. The efficiency of the recrystatlitation (or the pereentage recovery) is given by Recrystallization of Acetanilide Amount of porified acretailide recovered: Percentage repovery: Melting poiat of crude acetanalide: Meling point of purifisd acetanilide Recrystallization of p.Dibromobenzene Ameiat of parified p-dibroraobenzene recovered: Percentago recovery: Meltiag point of erude p-dibromobenzenc: 3. Crystallization may be indueed by schithing the vead beneath the rurfice of the solutios with a glas mod. 4. Wat propertici are derineble ia a restyatalimation wolveon? 5. Give two reasosa why vecuum flitation is samecimes preftrable to ordinty bravity filertion. 6. Why is water a good solvent for the eseryibllization of acetanilide? (Refor to a standard cheningy haadbook for the solubilify of acetesilide in bex and coid watoe.) 7. Why must the funnel be bisatsd before the hot acetinilide solution is bered? 8. Assuming that chareoul and sugar are the main impurities in a maple of eruse acetanilide, axplain how. receystalizakion from water would remoric each. 9. Bxplain why, during the recrystallization of p.dibrocmobenuens, be barbidity of the bot rolution was utad as ut indicator for the ritio of ethanol to water ured. 10. Why can we une a warer-ethanol mixture but not a water betane mikture as a rectystallizing solvean