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Vapour pressure of dilute aqueous solution of glucose is 750 mm of mercury at 373K. The mole fraction of solute is
Options
(a) 1/76
(b) 1/7.6
(c) 1/38
(d) 1/0.1
Correct Answer:
1/76
Explanation:
p(s) = p⁰(1 – x₂).
⇒ 750 = 760(1 – x₂) or 750/760 = 1 – x₂, or 750/760 -1 = -x₂
⇒ x₂ = 1/76.
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