Chemistry Question Bank

The Van’t Hoff factors i for an electrolyte which undergoes dissociation and association in solvents are respectively

The freezing point of equimolal aqueous solutions will be highest for

Among 0.1 M solutions of urea, Na₃PO₄ and Al₂ (SO₄)₃, which is incorrect

The freezing point (in ºC) of solution containing 0.04g of AlCl₃ (mol. wt. 133) in 100g of water (Kf = 1.86 K kg mol–1) is

Van’t Hoff factor more than unity indicates that the solute in solution has

If sodium sulphate is considered to be completely dissociated into cations and anions in aqueous solution, the change in freezing point of water fT , when 0.01 mole of sodium sulphate is dissolved in 1 kg of water, is…

Two solutions A and B are separated by a semi- permeable membrane. As a result of osmosis, the level of solution A is found to rise. It implies that

What would happen if a thin slice of sugar beet is placed in a concentrated solution of NaCl?

The empirical formula of a non-electrolyte is CH₂O. A solution containing 6g/L of the compound exerts the same osmotic pressure as that of 0.05 M glucose solution. The molecular formula of the compound is SOLUTIONS

Which of the following pair of solutions are expected to be isotonic at the same temperature?

Which of the following pairs of solutions is isotonic?

Solutions A, B, C and D are respectively 0.1M glucose, 0.05 M NaCl, 0.05 M BaCl₂ and 0.1 M AlCl₃. Which one of the following pairs is isotonic?

The freezing point of 1 molal Glucose solution in water is ( 1.86 H O f K K kg mol )

Which one of the following is not a colligative property?

Kf for water is 1.86 K kg mol–1. If your automobile radiator holds 1.0 kg of water, how many grams of ethylene glycol (C₂H₆O₂) must you add to get the freezing point of the solution lowered to –2.8ºC?

Ethylene glycol is used as an antifreeze in a cold climate. Mass of ethylene glycol which should be added to 4 kg of water to prevent it from freezing at – 6ºC will be (Kf for water = 1.86 K kg mol–1. and molar mass o…

0.052 100.052 6 / 60 x x x x b b b b b o b T T T T T T C 102. An aqueous solution of Glucose freezes at –0.186 °C. Given that 0.512 H O b K K kg mol and 1.86 H O f K K kg mol , the elevation in boiling point of this s…

If 15 gm of a solute in 100 gm of water makes a solution that freezes at –1.0ºC, then 30 gm of the same solute in 100 gm of water will make a solution that freezes at

The weight of pure NaOH required to prepare 250 cm3of 0.1N solutions is

The milli moles of N₂ gas that will dissolve in 1L of water at 298 K. when it is bubbled through water and has a partial pressure of 0.96 bar will be (Given that at 298 K KH = 76.8 k bar)

The volume of water to be added to 100 cm3 of 0.5 N H₂SO₄ to get decinormal concentration is

What happens to freezing point of benzene when naphthalene is added?

An aqueous solution of a non-electrolyte solute boils at 100.52ºC. The freezing point of the solution will be (Kf = 1.86K Kg mol-1, Kb = 0.52 K kg mol-1)

A solution of urea (mol. mass 56 g mol–1) boils at 100.18ºC at the atmospheric pressure. If Kf and Kb for water are 1.86 and 0.512 K kg mol–1 respectively, the above solution will freeze at

Depression of freezing point for …(i)… is directly proportional to …(ii)… Here, (i) and (ii) refer to