19,000+ solved questions for JEE Advanced, JEE Mains, NEET & IChO — with answers and expert explanations.
The mixture that forms maximum boiling azeotrope is: (NEET 2019)
The freezing point depression constant f K of benzene is 5.12 K kg mol-1. The freezing point depression for the solution of molality 0.078 m containing a non- electrolyte solute in benzene is (rounded off upto two dec…
Vapour pessure of CCl₄ at 25ºC is 143 mm Hg. 0.5g of a non-volatile solute (mol. wt. 65) is dissolved in 100 cm3 of CCl₄. Find the vapour pressure of the solution. (Density of CCl₄ = 1.58 g/cm3).
What happens when an egg is kept in saturated solution of NaCl after removing its hard shell in dil. HCl?
The unit of ebullioscopic constant is (UK PMT 2014) (a) Kkgmol (b) molkgK (c) Kgmol K (d) KmolKg
To observe an elevation in boiling point of 0.050C, the amount of a solute (molecular weight = 100) to be added to 100 g of water (Kb =0.5) is (WB JEE 2014)
Dissolution of 1.5 g of a non-volatile solute (molecular weight = 60) in 250 g of a solvent reduces its freezing point by 0.01 °C. Find the molal depression constant of the solvent. (MHT CET 2014)
The mass of non-volatile solute of molar mass 40 g/mol that should be dissolved in 114 g of octane to lower its vapour pressure by 20% is (KCET 2012)
The vapour pressure lowering caused by the addition of 100 g of sucrose (molecular mass = 342) to 1000 g of water (if the vapour pressure of water at 250C is 23.8 mm Hg) is (AFMC 2012)
Of the following 0.10 m aqueous solutions, which one will exhibit the largest freezing point depression? (AIPMT 2014)
Which one is not equal to zero for an ideal solution? (CBSE AIPMT 2015) (a) mix H (b) mix S (c) mix V (d) observed calculated byRaoult 'slaw p p p Ans. (b) Sol. (i) there will be no change in volume on mixing the two …
0.1 M NaCl and 0.05 M BaC₁₂ solutions are separated by a semipermeable membrane in a container. For this system, choose the correct answer. (AMU 2010)
The boiling point of water is 1000C. What will be the boiling point of an aqueous solution containing 0.6 g of urea (molar mass = 60) in 100 of water? b k for water 0.52 K / m (RPMT 2010) (a) o 100.052 C (b) o 101.052…
The relative lowering of vapour pressure is equal to the ratio between the number of (BVP 2010)
The empirical formula of a non-electrolyte is CH₂O. A solution containing 3 g of the compound exerts the same osmotic pressure as that of 0.05 M glucose solution. The molecular formula of the compound is (KCET 2011)
If the elevation in boiling point of a solution of 10 g of solute (molecular weight = 100) in 100 g of water is b T , the ebulliscopic constant of water is (Manipal 2010)
(iii) mix S for an ideal solution.
The vapour pressure of solution of 5g of non- electrolyte in 100g of water at a particular temperature is 2985 Nm-2. The vapour pressure of pure water at that temperature is 3000 Nm-2. The molecular weight of the solu…
Which one of the following pairs will not form an ideal solution?
Van’t Hoff factor more than unity indicates that the solute in solution has
0.01 M solution each of urea, common salt and Na₂SO₄ are taken, the ratio of depression of freezing point is
Van’t Hoff factor of Ca (NO₃)₂ is
If sodium sulphate is considered to be completely dissociated into cations and anions in aqueous solution, the change in freezing point of water ( Tf), when 0.01 mole of sodium sulphate is dissolved in 1 kg of water, …
Which of the following pair of solutions are expected to be isotonic at the same temperature?
Four solutions of K₂SO₄ with the following concentration 0.1 m, 0.01 m, 0.001 m and 0.0001 m SOLUTIONS are available. The maximum value of van’t Hoff factor, i, corresponds to