An 1% solution of `KCI(I),NaCI(II), BaCI_(2)(III)` and urea (IV), have their osmotic pressure at the same temperature in the ascending order (molar masses of `NaCI, KCI, BaCI_(2)` and urea are respectively `58.5, 74.5, 208.4, 60 g mol^(-1)` Assume 100% ionization of the electrolytes at this temperature

Options

A. I lt III lt II lt IV
B. III lt I lt II lt IV
C. I lt II lt III lt IV
D. III lt IV lt I lt II

Explanation

To solve the problem of determining the ascending order of osmotic pressure for the given solutions, we can follow these steps:

### Step 1: Understand the Concept of Osmotic Pressure
Osmotic pressure (π) is a colligative property that depends on the number of solute particles in a solution. The formula for osmotic pressure is given by:
\[ \pi = i \cdot C \cdot R \cdot T \]
where:
- \( i \) = Van't Hoff factor (number of particles the solute dissociates into)
- \( C \) = concentration of the solution (in mol/L)
...