What is the osmotic pressure difference across the membrane, if the osmotic pressure at inlet is 2.5atm and at outlet is 5.5atm?

What is the osmotic pressure difference across the membrane, if the osmotic pressure at inlet is 2.5atm and at outlet is 5.5atm? Correct Answer 3atm

The difference in osmotic pressure across the membrane is given by Δπ = π1 – π2. Therefore Δπ = 5.5atm – 2.5atm = 3atm.
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