n1 moli I2 ⇒ 2 I (2n1 particule)
n2 moli I2 nedisociat (n1 particule)
M = m/n n = 2n1 + n2 m = 254(n1+n2)
254(n1+n2)/(2n2+n2) = 212
254n1 + 254n2 = 424n1 + 212n2
42n2 = 170n1 n2 = 85/21 ·n1 n1 + n2 = 106/21 ·n1
%I2 disociat = n1·100/(n1+n2) = 2100/106 = 19,81%