Consider following solutions :
I: `1M` aqueous glucose solution II: `1M` aqueous sodium chloride solution
III: `1M` aqueous ammonium phosphate solution IV: `1M` benzoic acid in benzene
Select correct statements for the above solutions :

Options

A. All are isotonic solutions
B. III is hypertonic of I,II and IV
C. IV is hypotonic of I,II and III
D. II is hypotonic of III but hypertonic of I and IV

Explanation

To solve the problem, we need to analyze the four given solutions based on their osmotic pressure, which is determined by the van't Hoff factor (I). The van't Hoff factor indicates the number of particles into which a solute dissociates in solution. The osmotic pressure (π) can be expressed by the formula:

\[ \pi = ICRT \]

Where:
- \( \pi \) = osmotic pressure
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