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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]. |
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Answer» `(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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