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Syllabus

Calculate mole fraction of solute in its 2 molal aqueous solution.

_{2}SO_{4}, 25 ml of 12N HCl and 40 ml of 5N HNO_{3}were mixed together and the volume of the mixture was made 1000 ml by adding water.the normality of the resulting solution will bea solute X when dissolved in solvent associates to form a pentamer.the value of von't hoff factor i for the solute will be ?? option : 0.5 , 5 , 0.2 , 0.1Q36. Two 5 molal solutions are prepared by dissolving a non-electrolyte non-volatile solute separately in the solvents X and Y. The molecular weights of the solvents are M

_{X}and M_{Y}, respectively where M_{X}= $\frac{3}{4}{\mathrm{M}}_{\mathrm{Y}}$. The relative lowering of vapour pressure of the solution in X is "m' times that of the solution in Y. Given that the number of moles of solute is very small in comparison to that of solvent, the value of "m" is :$\left(1\right)\frac{4}{3}\phantom{\rule{0ex}{0ex}}\phantom{\rule{0ex}{0ex}}\left(2\right)\frac{3}{4}\phantom{\rule{0ex}{0ex}}\phantom{\rule{0ex}{0ex}}\left(3\right)\frac{1}{2}\phantom{\rule{0ex}{0ex}}\phantom{\rule{0ex}{0ex}}\left(4\right)\frac{1}{4}\phantom{\rule{0ex}{0ex}}$

how many Na+ ions are present in 100ml of 0.25 M of Nacl solution? op: 0.025 x 10^23 1.505 x 10^22 15 x 10^22 2.5 x 10^2320ml of 0.5M Hcl is mixed with 30ml of 0.3M HCL the molarity solution is?

_{4}.7H_{2}O containing 5.56g/200ml which converts of ferric form in a reaction is?_{6}H_{12}O_{6}) solution at 300K(At. Wt. : Mg = 24)

1. 60 2. 84 3. 75 4. 96

16. What is the mass of the precipitate formed when 50 ml. of 16.9% solution of AgNO

_{3}is mixed with 50 ml. of 5.8% NaCl solution?[Ag = 107.8, N = 14, O = 16, Na = 23, Cl = 35.5]

1. 7 g 2. 14 g 3. 28 g 4. 3.5 g

a) phenol b) aniline c) nitrobenzene d) cyclohexane

4. Which of the following is aliphatic saturated hydrocarbon?

$a.{C}_{6}{H}_{6}\phantom{\rule{0ex}{0ex}}b.{C}_{6}{H}_{10}\phantom{\rule{0ex}{0ex}}c.{C}_{6}{H}_{12}\phantom{\rule{0ex}{0ex}}d.{C}_{6}{H}_{14}$

what is crenation

_{4}solution. Calculate the Molar Mass of Cu.Q55. The vapour pressure of water at room temperature is 23.8 mm of Hg. The vapour pressure of an aqueous solution of sucrose with mole fraction 0.1 is equal to :

(1) 23.9 mm Hg (2) 24.2 mm Hg

(3) 21.42 mm Hg (4) 31.44 mm Hg

SOLVE THIS:Calculate the mass in grams of an impurity of molar mass 100g mol

^{-1}which would be required to raise to boiling point of 50g chloroform by 0.30 K if K_{b}for chloroform is 3.63 k kg mol^{-1}.