5. Considering the formation breaking and strength of hydrogen bond, predict which of the following mixtures will show a positive deviation from Raoult’s law
a. Methanol and acetone
b. Chloroform and acetone
c.Nitric acid and water
d. Phenol and aniline
ANSWER . A
Explanation : In pure methnol, molecules are hydrogen bonded. One adding actone, its molecules get in between the host molecules and break some of the hydrogen bonds between them.
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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)
