State Henry’s law. What is the effect of temperature on the solubility of a gas in a liquid ?
(i) State the law which helps to determine the limiting molar conductivity of weak electrolyte.
(ii) Calculate limiting molar conductivity of CaSO₄ (limiting molar conductivity of calcium and sulphate ions are 119.0 and 160.0 Scm² mol⁻¹ respectively)
Calculate the degree of dissociation (α) of acetic acid if its molar conductivity () is 39.05 Scm² mol⁻¹. Given (H⁺) = 349.6 Scm² mol⁻¹ and (CH₃COO⁻) = 40.9 Scm² mol⁻¹..
Define the following terms :
(i) Fuel cell
(ii) Limiting molar conductivity
Define the following terms :
(i) Molar conductivity (),
(ii) Secondary batteries.
State Kohlrausch law of independent migration of ions. Why does the conductivity of a solution decrease with dilution ?
The conductivity of 0.20 M solution of KCl at 298 K is 0.025 Scm⁻¹. Calculate its molar conductivity.
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.
The following curve is obtained when molar conductivity is plotted against the square root of concentration, c½ for two electrolytes A and B :
What is meant by rate of a reaction ? Differentiate between average rate and instantaneous rate of a reaction.
(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?
A 1.00 molar aqueous solution of trichloroacetic acid (CCl₃COOH) is heated to its boiling point. The solution has the boiling point of 100.18 °C. Determine the van’t Hoff factor for trichloroacetic acid. ( for water = 0.512 K kg mol⁻¹).
Define the following terms :
(i) Mole fraction
(ii) Isotonic solutions
(iii) Van’t Hoff factor
(iv) Ideal solution
Define the following terms:
(i) Abnormal molar mass
(ii) van’t Hoff factor
Define the following terms:
(i) Colligative properties
(ii) Molality (m)