The vapour pressure of a solution having 2.0g of a solute X (molar mass 32 g mol–1) in 100 g of CS2 (vapour pressure 854 Torr) is 848.9 Torr. The molecular formula of the solute is

P0−PP0=WAMA×MBWB⇒MA=254.5≃256n=MAEFW=25632=8∴ Molecular formula ⇒(EF)n=X8

The vapour pressure of a solution having 2.0g of a solute X (molar mass 32 g mol–1) in 100 g of CS2 (vapour pressure 854 Torr) is 848.9 Torr. The molecular formula of the solute is

P0−PP0=WAMA×MBWB⇒MA=254.5≃256n=MAEFW=25632=8∴ Molecular formula ⇒(EF)n=X8

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The vapour pressure of a solution having 2.0g of a solute X (molar mass 32 g mol^–1) in 100 g of CS₂ (vapour pressure 854 Torr) is 848.9 Torr. The molecular formula of the solute is

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$\begin{array}{l} \frac{P^{0} - P}{P^{0}} = \frac{W_{A}}{M_{A}} \times \frac{M_{B}}{W_{B}} \Rightarrow M_{A} = 254 .5 ≃ 256 \\ n = \frac{M_{A}}{EFW} = \frac{256}{32} = 8 \\ ∴ Molecular formula \Rightarrow (EF)_{n} = X_{8} \end{array}$

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The vapour pressure of a solution having 2.0g of a solute X (molar mass 32 g mol–1) in 100 g of CS2 (vapour pressure 854 Torr) is 848.9 Torr. The molecular formula of the solute is

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The vapour pressure of a solution having 2.0g of a solute X (molar mass 32 g mol^–1) in 100 g of CS₂ (vapour pressure 854 Torr) is 848.9 Torr. The molecular formula of the solute is