Question

In which of the following, the van't Hoff factor (i) is equal to one?

• A. $NaCl$
• B. $KN{O}_3$
• C. $Urea$
• D. All of these

Answer 1

The correct option is C $Urea$

Van't Hoff factor (i) is equal to no of ions in solution.

$NaCl\to N{a}^{+}+C{L}^{-}$ $i=2$ ions

Since urea is a non-electrolyte, Hence, the Van't Hoff factor is equal to $1$.

$KN{O}_3\to K^{+}+{N{O}_3}^{-}$ $i=2$ ions.