Question

Van't Hoff factor for an electrolyte is greater than _____.

Answer 1

The van't Hoff factor for an electrolyte is greater than 1.

For example, consider $NaCl$ which is a strong electrolyte and completely dissociates.

$NaCl\to N{a}^{+}+C{l}^{-}$

Thus, 1 mole of NaCl on dissociation gives 2 moles of ions.

Hence, the van't Hoff factor $i=\frac{\text{Actual number of particles}}{\text{Number of particles for no ionization}}=\frac{2}{1}=2$.