the osmotic pressure of decimolar solution of urea at 27degree C

1) 2.49 bar

2) 5bar

3) 3.4 bar

4) 1.25 bar

Use the formula $\mathrm{\pi }$ = cRT
​Decimolar solution means concentration of solution is 1/10 M or 0.1 M solution.
V = 1 L
c = 0.1 mol
T = 27$°$ C = 273 K + 27 = 300 K
​R = 0.0821 L atm K^-1 mol^-1
$\mathrm{\pi }$ = cRT / V
  = 0.1 mol x 0.0821 L atm K^-1 mol^-1 x 300K / 1 L
​ = 2.463 atm
​