A 21.8 % (by mass) solution of ferrocene (FW = 186.04 g/mol) dissolved in hexane (FW...

A 21.8 % (by mass) solution of ferrocene (FW = 186.04 g/mol) dissolved in hexane (FW = 86.18 g/mol) has a density of 1.490 g/mL. What is the mole fraction (Χ) of ferrocene? Ferrocene is a non-electrolyte.

Expert Solution

21.8% solution of ferrocene means 21.8g of ferrocene present in 100g of solution

mass of solvent = mass of solution - mass of solute

= 100-21.8 = 78.2g

no of moles of ferrocene = W/G.M.Wt = 21.8/186.04 = 0.117moles

no of moles of hexane = W/G.M.Wt = 78.2/86.18 = 0.91moles

total no of moles of ferrocene + hexane = 0.117+0.91 = 1.027

molefraction of ferrocene (X) = no of moles of ferrocene/total no of moles

= 0.117/1.027 = 0.114>>>>>answer

queen_honey_blossom answered 2 years ago

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