19,000+ solved questions for JEE Advanced, JEE Mains, NEET & IChO — with answers and expert explanations.
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)
Assertion: The water pouch of instant cold pack for treating athletic injuries breaks when squeezed and NH₄NO₃ dissolves lowering the temperature. Reason: Addition of non-volatile solute into solvent results into depr…
KH value for Ar(g), CO₂(g), HCHO (g) CH₄(g)are 40.39, 1.67, 1.83 × 10–5 and 0.413 respectively. Arrange these gases in the order of their increasing solubility.
The volume of water to be added to 100 cm3 of 0.5 N H₂SO₄ to get decinormal concentration is
The weight of pure NaOH required to prepare 250 cm3of 0.1N solutions is
Henry’s law constant of oxygen is 1.4 × 10–3 mol L–1. atm–1 at 298 K. How much of oxygen is dissolved in 100 mL at 298 K when the partial pressure of oxygen is 0.5 atm? (Kerala CEE)
What will be the volume of a 12 M solution, if it is equivalent to 240 mL 18M solution
Assertion: If a liquid solute more volatile than the solvent is added to the solvent, the vapour pressure of the solution may increase. Reason: In the presence of a more volatile liquid solute, only the solute will fo…
Assertion: If red blood cells were removed from the body and placed in pure water, pressure inside the cells increases. Reason: The concentration of salt content in the cells increases.
The normality of a 2.3 M sulphuric acid solution is
The molarity of a solution of Na₂CO₃ having 10.6 g/500 ml of solution is
The percentage (by weight) of sodium hydroxide in a 1.25 molal NaOH solution is
The molarity of a solution obtained by mixing 800 mL of 0.5 M HCl with 200 mL of 1M HCl will be
Assertion: Molecular mass of benzoic acid when determined by colligative properties is found high. Reason: Dimerisation of benzoic acid.
Which observation(s) reflect(s) colligative properties? (i) A 0.5 m NaBr solution has a higher vapour pressure than a 0.5 m BaCl₂ solution at the same temperature (ii) Pure water freezes at the higher temperature than…
The vapour pressure of water at room temperature is 23.8 mm Hg. The vapour pressure of an aqueous solution of sucrose with mole fraction 0.1 is equal to
4 L of 0.02 M aqueous solution of NaCl was diluted by adding one litre of water. The molarity of resultant solution is …A… Here, A refers to
An aqueous solution of urea containing 18g urea in 1500 cm3 of the solution has a density equal to 1.052 g/cm3. If the molecular weight of urea is 60, then the molality of the solution is
The mole fraction of C₂H₅OH (Mol. wt. = 46) in 5 molal aqueous ethyl alcohol solution is
What is the molarity of a solution containing 10g of NaOH in 500 mL of solution?
What will be the molarity of 30 mL of 0.5 M H₂SO₄ solution diluted to 500 mL?
What is the molarity of 0.2 N Na₂CO₃solution?
What will be the molality of a solution of glucose in water which is 10% w/W?
Which of the following concentration factors affected by change in temperature?
What is the mole fraction of glucose in 10% w/W glucose solution?