15g p-n.tol. ..................... 100%
m.pura ............................. 68,5%
= 10,275 g p-n.tol. pura
10,275 g p-n.tol. .......................... 60%
C.t. .............................................. 100%
= 17,125 g
m g 17,125 g
C6H5-CH3 + HNO3 --> O2N-C6H4-CH3 + H2O
92 137
=> m = 11,5 g