Explain the solubility rule “like dissolves like” in terms of intermolecular forces that exist in solutions.
A substance (solute) dissolves in a solvent if the intermolecular interactions are similar in both components. For example : polar solutes dissolve in polar solvents and non-polar solutes in nonpolar solvents thus we can say “like dissolves like”.
Calculate the molality of ethanol solution in which the mole fraction of water is 0.88.
What type of intermolecular attractive interaction exists in the pair of methanol and acetone ?
What is meant by elevation in boiling point? Why is it a colligative property?
(i) Gas (A) is more soluble in water than Gas (B) at the same temperature. Which one of the two gases will have the higher value of KH (Henry’s constant) and why ?
(ii) In non-ideal solution, what type of deviation shows the formation of maximum boiling azeotropes ?
(i) Write the colligative property which is used to find the molecular mass of macromolecules.
(ii) In non-ideal solution, what type of deviation shows the formation of minimum boiling azeotropes?
The conductivity of a 0.01 M solution of acetic acid at 298 K is 1.65 x 10⁻⁴ S cm⁻¹. Calculate molar conductivity () of the solution.
State Kohlrausch law of independent migration of ions. Why does the conductivity of a solution decrease with dilution ?
How many electrons flow when a current of 5 amps is passed through a solution for 193 sec ? Given F = 96500 C. \(N_0\) = 6.002 × \(10^{23}\) \(mol^{-1}\).
State Henry’s law. What is the effect of temperature on the solubility of a gas in a liquid ?