Which has maximum osmotic pressure at temperature `T`?
a. `100 mL` of `1 M` urea solution
b. `300 mL` of `1 M` glucose solution
c. Misture of `100 mL` of `1 M` urea solution and `300 mL` of `1 M` glucose solution
d. All are isotonic

Explanation

To determine which solution has the maximum osmotic pressure at temperature \( T \), we can use the formula for osmotic pressure (\( \Pi \)):

\[ \Pi = iCRT \]

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