When 15.0 cm³ of benzene, C₆H₆, is added to 125 cm³ of water, H₂O, at 20°C, the final volume of the liquid mixture is 137 cm³. Calculate the partial molar volume of benzene in dilute aqueous solutions given that the density of benzene and of water are 0.879 g cm^-3 and 0.998 g cm^-3 respectively, and the partial molar volume of water is 17.8 cm³ mol^-1 at this temperature.

Question

Quizplus · Accepted Answer

The partial molar volume of benzene can be calculated using the formula for the total volume of a mixture: V = n1*V1 + n2*V2, where V is the total volume, n1 and n2 are the moles of each component, and V1 and V2 are their partial molar volumes. Solving for benzene's partial molar volume using the given densities and volumes, we find it to be approximately 81.8 cm³/mol.

When 150 Cm3 of Benzene, C6H6, Is Added to 125 Cm3

When 150 Cm³ of Benzene, C₆H₆, Is Added to 125 Cm³