題組內容

三、 A man is found lying dead on his living room floor with white powder on his upper lip. The man’s roommate has a prior arrest for cocaine possession. However, there is also a box of powdered doughnuts on the kitchen cou nter. Please try to answer the following question:

（二）I f the unknown white powder is cocaine, how can we determine if the cocaine is in the HCl form or freebase form?