Question: 1. The elemental analysis of an organic solid extracted from gum arabic (a gummy substance used in adhesives, inks, and pharmaceuticals) showed that it

1. The elemental analysis of an organic solid extracted from gum arabic

1. The elemental analysis of an organic solid extracted from gum arabic (a gummy substance used in adhesives, inks, and pharmaceuticals) showed that it contained 40.0% C, 6.7% H, and 53.3% O. A solution of 0.650 g of the solid in 27.8g of the solvent diphenyl gave a freezing point depression of 1.56C. Calculate the molar mass and molecular formula of the solid. (Kf = 8.00 C/m) 2. The heat of fusion of acetic acid is 11.72 kJ/mol at the melting point 16.61C. Calculate K for acetic acid.

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