Verified answer

A good approximation can be calculated using the Morse equation.

Aspirin is a non electrolyte, so use a van 't Hoff factor = 1.0

Calculate the Molarity of the aspirin solution based upon 49.4 mg * 4 = 197.6 mg = 0.1976 g of aspirin divided by the molar mass of 180.157 g/mol.

Use 0.0821 L atm K-1 mol-1 for the general gas constant.

Convert 28º C to K by adding 274.15.

The answer will be in atmospheres.

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