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The vapour pressure of CS(2) at 50^(@)C ...

The vapour pressure of `CS_(2)` at `50^(@)C` is 854 torr and a solution of 2.0 gm sulphur in 100 gm of `CS_(2)` has vapour pressure 848.9 torr. If the formula of sulphur molecule is `S_(n)` , then calculate the value of "n" (approx)
(At mass of S = 32):-
(fill nearest integer value)
[Assume very dilute solution].

Text Solution

Verified by Experts

The correct Answer is:
`8.00`
(For very dilute solution)
`(mol. Wt)_("solute") = 254.5`
mol. Wt of `S_(n) = 32 xx n`
`32 xx n = 254.5`
`n = 7.95`
`= 8`.
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