33 ans needed

33 ans needed k' 018 019 Q20 021 022. 023. 024 025 026 027 028 Q29 Q 30 031 Q 32 033 Q 34 035 WII! elevation in boiling point be the same for 0.1M NaCl and 1M sucrose solution? Why is molality of solution preferred for expressing conc than-molality? Which aqueous solution has higher conc 1 molar or 1 molal having the same solute? Find the molarity and molality of a 13% solution of sulphuric acid (density of sulphuric acid solution log / cmY) The vapour pressure of a 5% aqueous solution of a non volatile organic substance at 373 K is 745 mm Hg. Calculate the molar mass of the substance A solution contains 3.5g of a non volatile solute in 125gof water and it boils at 373,52 Calculate the molar mass of the solute (Kb of water -0.52K kg/mol) Calculate the molecular mass of a substance 1 Og of which on being dissolved in 1 of solvent gave an elevation of 0307 K in the boiling point. (Kb= 1.84 K kg/m) The boiling point of water becomes 10082 degree celcius if 18g of non volatile solute is dissolved in 100ml of it. Calculate the molar mass of the solute. (Kb for water=O.6 K/m) Calculate the freezing point of a one molar aq solution of KBr (density-I .06 g/ml), {f for water: 186 K kg/mo[ atomic mass K 39. Br=80 A solution of urea in water freezes at 0400 degree celcius. What will be the boiling point of the same solution if the depression and elevation constants of water are 1 86 degree kg/mol and 0.512 degree kg/mol respectively? Find the boiling point and the freezing point of a solution containing 0.520 g of glucose dissolved in 80.20g of water. For Water, Kf=1.86 Kim and Kb=OS2K/m A decinormal solution of NaCl exerts an osmotic pressure of 4.6 atm at 300K. Calculate its degree of dissociation (2-0.082 L atm/K!mol) (87%) Calculate the amount of sodium chloride which must be added to one kg of water SO that the freezing point is depressed by 3K Given Kfforwater=186k kg/mol. (47 üg) The freezing point of a solution containing 0.2g of acetic acid in 20g of benzene is lowered by 045 degree celcius Calculate the degree of association of acetic acid in benzene (Kffor benzene = K kg/mol) (94.6%) 0.85% aqueous solution sodium nitrate in approx dissociated at 27 degree celcius_ Calculate the osmotic pressure (R:0 0821 L atm/KJmol) (4.674atm) A very small amount of non volatile solute (that does not dissociate) is dissolved is 568cm: of benzene (densitFO,889 g/cm3y At room temp. Vapour pressure of the solution is 9888mm Hg while that of benzene is 100 mm Find the molality of the solution If the freezing point temperature of the solution is 73 degree lower than that of the benzene, what is the value ofkffor benzene. (508 K kg/mol) A solution of non volatile solute in water freezes at - 0.30 degree celcius, The vap pressure of pure water at 29B K is 2351 mm Hg and kf for water is 186 degree/molal. Calculate the vap pressure of the solution at the 298K. (23.44 mm\Hg) To 500 crns of water 0003 kg of acetic acid added If 23% of acetic acid is dissociated, what will be the depression in freezing point? Kf and density of water are 1 , 86K kg/mol and 0897 g/cm: respectively (i=123, ) hodo - manage your online data. Learn hore>