The van't Hoff factor "i" for 0.2 molal aqueous solution of urea is:
0.2
0.1
1.2
1.0
Urea is non electrolyte, so it neither undergoes association or dissociation, Hence van't Hoff factor is = 1.
The Van't Hoff factor i for a 0.2 molal aqueous solution of urea is: