Molecular mass of Phenol = 94 g/mol
Ethanol = 46 g/mol
Weight of Phenol Taken = 25.5 g
Ethanol = 495 g
Total Weight = 495 + 25.5 = 520.5 g
So moles of phenol = 25.5 94 = 0.27
mole of ethanol = 495 / 46 =<u> 10.76</u>
1. Mole fraction of phenol = 0.27 / (10.76 + 0.27) = 0.27 / 11.03 = <u>0.0244</u>
2. Mass % of phenol = mass of phenol / total mass x 100
25.5 / x 10.5 =<u> 4.9 %</u>
3. Molar concentration of phenol = mol Phenol/mass of solvent (kg)
the solvent is ethanol => Because presents an exceedingly high amount
0.27 / 495 X 1000 m = <u>0.54m</u>
4. Molarity = moles of phenol/ vol of solution (in liter)
Density of solution = 0.938 g/mL 44
Mass of solution = 520.5 g
Volume of Solution = Mass / Density = 520.5 / 0.938 = 554.9 or 555 ml
Molarity =<u> (0.27 / 555)X 1000 = 0.48 M.</u>
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Phenol has unique properties and is not classified as alcohol. They are highly acidic because the aromatic ring is tightly bound to oxygen and the bond between oxygen and hydrogen is relatively loose.
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