Forensics: Drug Analysis

For this exercise, we were asked for background knowledge of cocaine, LSD, and meth. Information gathered:
Cocaine:
     Correct Chemical Name: benzoylmethylecgonine
     Correct Chemical Formula: C17H12NO4
     pH: 7.2
LSD:
     Correct Chemical Name: Lysergic Acid Diethylamide
     Correct Chemical Formula: C20H25N3O
     pH: 4
Meth:
     Correct Chemical Name: N-methyl-1-phenyl-propan-2-amine
     Correct Chemical Formula: C10H15N
     pH: 12.8

Lab: 

For this lab we were supposed to go to each section and test each of the unknowns for one of the drugs. 

Results: 

Drug     pH           Cocaine           LSD           Meth

1           4           Negative           Negative      Positive 

2           9           Positive             Negative      Negative

3           3           Negative           Positive        Negative

4           8           Positive             Negative      Negative

5           12         Negative           Negative      Positive

6           4           Negative           Positive        Negative