At 35ºC, the vapour pressure of C S 2 is 512 mm Hg and that of acetone is 344 mm Hg. A solution of C S 2 in acetone has a total vapour pressure of 600 mm Hg. The false statement amongst the following

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At 35ºC, the vapour pressure of C S 2 is 512 mm Hg and that of acetone is 344 mm Hg. A solution of C S 2 in acetone has a total vapour pressure of 600 mm Hg. The false statement amongst the following is

TestHub · Accepted Answer

The vapour pressure of mixture (= 600 mm Hg) is greater than the individual vapour pressure of its constituents (Vapour pressure of $C S_{2} =$ 512 mm Hg, acetone = 344 mm Hg).
Hence, the solution formed shows positive deviation from Raoult's law.
$(1)$ $Δ_{s o l .} H > 0,$
$(2)$ Raoult's law is not obeyed
$(3)$ $Δ_{s o l .}$ Volume > 0
$(4)$ $C S_{2}$ and Acetone are less attracted to each other than to themselves.

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