Question

A dilute sugar solution, prepared by dissolving 8.00 g of an unknown sugar with sufficient water to make 0.200 L of solution, has an osmotic pressure of 2.86 atm at 25°C. Find the molecular weight of the sugar.

Answer 1

Answer:

π = MRT

  = $\frac{mol}{L}$ × RT

  =  $\frac{m/MM}{L}$×RT

  MM = mxRxT / πxL

MM = 8.00g ×0.0821×298/ 2.86×0.200L

       = 342.2 g/mol

Explanation:

the molecular weight of the sugar can be determined by using the osmotic pressure formula.the formula has to be worked on in order to get  the molar mass of the sugar.the name of the sugar is called sucrose.

Answer 2

Answer:

341.97 g/mol.

Explanation:

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