Safrole was once used as a flavoring in root beer, until it was banned in 1960. what is the vapor pressure of a solution prepared by dissolving 0.75 mol of nonvolatile safrole in 950 g of ethanol (46.07 g/mol) ? p°ethanol = 50.0 torr at 25°c.

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Chemistry

Lia Quinn

22 June, 18:13

Safrole was once used as a flavoring in root beer, until it was banned in 1960. what is the vapor pressure of a solution prepared by dissolving 0.75 mol of nonvolatile safrole in 950 g of ethanol (46.07 g/mol) ? p°ethanol = 50.0 torr at 25°c.

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Dayana Goodman · Answer 1

Answer is: 48,25 torr.

Raoult's Law: p = x (solv) · p (solv)

p - vapour pressure of a solution.

x (solv) - mole fraction of the solvent.

p (solv) - vapour pressure of the pure solvent.

n (ethanol) = 950g : 46,07g/mol = 20,62 mol.

x (solv) = moles of solvent : total number of moles

x (solv) = 20,62 : 21,77 = 0,965.

p = 0,965 ·50,0 torr = 48,25 torr.