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QNEET-2021-Ch-602: NEET 2021 Chemistry - Class 12 NEET-2021-Ch-602 Solution: The correct option for the value of vapour pressure of a…
The correct option for the value of vapour pressure of a solution at with benzene to octane in molar ratio 3:2 is: [At vapour pressure of benzene is 280 mm Hg and that of octane is 420 mm Hg. Assume Ideal gas] 350 mm of Hg 160 mm of Hg 168 mm of Hg 336 mm of Hg
Multiple Choice Options
- A 350 mm of Hg
- B 160 mm of Hg
- C 168 mm of Hg
- D 336 mm of Hg
Step-by-Step Verified Solution
Given : n C 6 H 6 : n C 8 H 18 = 3 : 2
So, _ C 6 H 6 = 3 5 , _ C 8 H 18 = 2 5
Total vapour pressure of solution,
p s = p C 6 H 6 o _ C 6 H 6 + p C 8 H 18 o _ C 8 H 18
= 280 _ 3 5 + 420 _ 2 5
= 168 + 168
= 336 mm of Hg