The piperazine (C4H10N2) content of an impure commercial material can be determined by precipitating with acetic acid (CH3CO2H) and weighing the diacetate (C8H18N2O4). In one experiment, XXXXXXXXXXg...

The piperazine (C4H10N2) content of an impure commercial material can be determined by precipitating with acetic acid (CH3CO2H) and weighing the diacetate (C8H18N2O4). In one experiment, 0.3126 g of the sample was dissolved in 25 ml of acetone and 1 ml of acetic acid was added. After 5 min, the precipitate was filtered, washed with acetone, dried at 110ºC, and found to weigh 0.7121 g. What is the percent of piperazine in the commercial material?