Vapour pressure of chloroform \(\mathrm{(CHCl_3)}\) and dichloromethane \(\mathrm{(CH_2Cl_2)}\) at are 200 mmHg and 41.5 mmHg respectively. Vapour pressure of the solution was obtained by mixing 25.5 g of \(\mathrm{(CHCl_3)}\) and 40 g of \(\mathrm{(CH_2Cl_2)}\) at the same temperature will be: (Molecular mass of \(\mathrm{(CHCl_3)}\) = 119.5 u and molecular mass of \(\mathrm{(CH_2Cl_2)}\) = 85 u)
1. | 90.40 mm Hg | 2. | 119.5 mm Hg |
3. | 75 mm Hg | 4. | 173.9 mm Hg |
A solution of acetone in ethanol:
1. | Shows a negative deviation from Raoult's law |
2. | Shows a positive deviation from Raoult's law |
3. | Behaves like a near-ideal solution |
4. | Obeys Raoult's law |