The osmotic pressure of $5\%$ aqueous solution of sugar (mol. Mass 342) at $15°C$ is

Given data : It is given to identify The osmotic pressure of $5\%$ aqueous solution of sugar (mol. Mass 342) at $15°C$ is

Explanation

Mass of solution = 100g
d = 1 g/ml density
100 mL Equals 0.1 litre solution volume
$$\begin{gathered} \text{ Moles of sugar }=\frac{5}{342} = 0.146 mol \\ Osmotic pressure = CRT \\ Osmotic pressure = \frac{nRT}{V}=\frac{0.0146\times 0.08206\times 228}{0.1}=3.45 atm \end{gathered}$$

Hence, the correct option (B). 3.45atm