A)quenched B)neutralized C)Isolated D)Purified Weigh 1.8 grams of acetanilide in
ID: 505424 • Letter: A
Question
A)quenched B)neutralized C)Isolated D)Purified Weigh 1.8 grams of acetanilide into a 100 mL and add a magnetic stirring bar Measure g mL of conc. Hso4 to a graduate cylinder Add 6 mL of conc. Hasos to the RBF tir contents until mostly dissolved and then cool in an ice-water bath. Add 0.8 ml of HNos to the remaining 2 mL of H12so4. Mix the acids well with a pipette odemonstrated). Cool acids in an ice bath. Add the cold nitrating mixture drop wise to the reaction RBF over 20 minutes. Keep the reaction in the ice-water bath After addition continue to stir for 10 minutes. WHILE waiting: assemble the reflux equipment including a heating mantle
Explanation / Answer
A) Quenched - With the solution still immered and strring in the ice-bath, carefully (exothermic) add 25 mL of ice cold water to the RBF to produce a green-yellow prcepitate.
B) Neutralized - No neutralization is done. Since you used acid, and to neutralize an acid we need a base. But no base is used in the given procedure.
C) Isolated - Suction filter off the solids present (by -product) and discard them.
D) Purified - Compounds are purified by recrystalization or column purification or distilation. You can purified with recrystalization method if you didn't obtain yellow crystals (solids).