Calculate the molecular weight of cellulose acetate if its `0.2%` (wt./vol.) solution in acetone (sp.gr.`0.8`) shows an osmotic rise of `23.1` mm against pure acetone at `27^(@)C`.

Explanation

To calculate the molecular weight of cellulose acetate from the given data, we will use the formula for osmotic pressure, which is derived from the van't Hoff equation:

\[ \Pi = \frac{n}{V}RT \]

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