A : n moli CxH(2x-6) + Br2 ⇒ CxH(2x-7)Br+HBr nBr = n m1Br = 80n
M A = 14x-6 = M
B : n moli C(x+1)H(2x-4) + Br2 ⇒ C(x+1)H(2x-5)Br m2Br = 80n
M B = 14x +8 = M + 14
160n·100/[n(14x - 7 + 80 + 14x +7 + 80)] = 44,95
16000/(28x + 160) = 44,95 28x + 160 = 356 x = 7
A = toluen B = etilbenzen
raspuns : C