Question

At constant temperature, the osmotic pressure of a solution is:

• A. directly proportional to the concentration
• B. inversely proportional to the molar mass of solute
• C. directly proportional to the square of the concentration
• D. directly proportional to the square root of the concentration

Answer 1

Answer: (A), (B)

The correct options are
A directly proportional to the concentration
B inversely proportional to the molar mass of solute

According to Vant Hoff Boyles Law:
Osmotic pressure (p) of a solution at a constant temperature is directly proportional to its concentration C (i.e., moles per litre)
C=$\frac{n}{v}$
where n is the number of moles of solute present in volume V litres of solution.So osmatic pressure depends on molar mass.
Hence option A and B are correct, remaining does not make any sense so wrong options.