2. Vapour pressure of chloroform and dichloromethane at
25° C are 200 mm Hg and 41.5mm Hg respectively. Vapour pressure of the solution obtained by mixing 25.5g of CHCl3 and 40g of CH2 Cl2 at the same temperature will be (Molecular mass of CHCl3 = 119.5u and molecular mass of CH2 Cl2 = 85u)
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dm-3 sucrose solution at 20 ° C (molar gas constant, R = 8.314 JK -1 mol -1 ; 1 dm-3 = 0.001 m3 ) a. 4870 Pa b. 4.87 Pa c. 0.00487 Pa d. 0.33 Pa Ans. a (17)
