2. An azeotropic solution of two liquids has boiling point lower then either when it
a. Shows a negative deviation from Raoult’s law
b. Shows no deviation from Raoult’s law
c. Shows positive deviation from Raoult’s law
d. Is saturated
Ans. c
Explanation : When the solution shows deviation from Raoult’s there is an itnermediate composition for which the vapour pressure of the solution is maximum and hence boiling point is minimum.
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dm-3 sucrose solution at 20 ° C (molar gas constant, R = 8.314 JK -1 mol -1 ; 1 dm-3 = 0.001 m3 ) a. 4870 Pa b. 4.87 Pa c. 0.00487 Pa d. 0.33 Pa Ans. a (17)
