Question

A compound X undergoes tetramerisation in a given organic solvent. The van ’t Hoff factor ‘i’ is calculated as 0.05y. Find y. (Assuming 100% association)

Answer 1

$4A\rightleftharpoons A_4$
1 - $\alpha$ $\frac{\alpha }{4}$
i = $\frac{1-\alpha +\frac{\alpha }{4}}{1}$
i = $1-\frac{3\alpha }{4}$
0.2y = 4 - $3\alpha$
$\alpha$ = 1
y = 5