When 0.55 g of pure benzoic acid (C6H5COOH) is dis-solved in 32.0 g of benzene (C6H6), t...

When 0.55 g of pure benzoic acid (C₆H₅COOH) is dis-solved in 32.0 g of benzene (C₆H₆), the freezing point of the solution is 0.36 °C lower than the freezing point value of 5.5 °C for the pure solvent. (a) Calculate the molecular weight of benzoic acid in benzene. (b) Use the structure of the solute to account for the observed value: