(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?
(ii) In non-ideal solution, what type of deviation shows the formation of minimum boiling azeotropes?
(i) Osmotic pressure is the colligative property which is used to find the molecular mass of macromolecules.
(ii) In non-ideal solution, positive deviation shows the formation of minimum boiling azeotropes.
(ii) In non-ideal solution, positive deviation shows the formation of minimum boiling azeotropes.
(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 ?
What are colligative properties? Write the colligative property which is used to find the molecular mass of macromolecules.
What type of intermolecular attractive interaction exists in the pair of methanol and acetone ?
Define the following terms :
(i) Mole fraction
(ii) Isotonic solutions
(iii) Van’t Hoff factor
(iv) Ideal solution
Why a mixture of Carbon disulphide and acetone shows positive deviation from Raoult’s law? What type of azeotrope is formed by this mixture?
Explain the solubility rule “like dissolves like” in terms of intermolecular forces that exist in solutions.
Define azeotropes. What type of azeotrope is formed by positive deviation from Raoult’s law ?
Give an example.
State Raoult’s law for a solution containing nonvolatile solute. What type of deviation from Raoult’s law is shown by a solution of chloroform and acetone and why?
(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)
What are the transition elements ? Write two characteristics of the transition elements.
Complete the following chemical equations :
(i) MnO₄⁻(aq) + S₂O₃²⁻(aq) + H₂O(l) →
(ii) Cr₂O₇²⁻(aq) + Fe²⁺(aq) + H⁺(aq) →
Describe the oxidising action of potassium dichromate and write the ionic equations for its reaction with (i) an iodide (ii) H₂S.
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.
Calculate pH of following half-cell. Pt, \(H_2\) / \(H_2\)\(SO_4\) , if its electrode potential is 0.03V.