If P 0 and P S are the vapour pressures of the solvent and solution respectively, n 1 and n 2 are the mole fractions of the solvent and solute respectively, then

Question

If P 0 and P S are the vapour pressures of the solvent and solution respectively, n 1 and n 2 are the mole fractions of the solvent and solute respectively, then, P S = P 0 n 1, P S = P 0 n 2, P 0 = P S n 2, P S = P 0 n 1 n 2

MARKS App · Accepted Answer

According Raoult’s law, P 0 - P S P 0 = n n + N ; or P 0 - P S P 0 = n 2 (as given) or 1 - P S P 0 = n 2 Or P S P 0 = 1 - n 2 = n 1 or P S = P 0 × n 1

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