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?
The relative lowering of vapour pressure of a solution is equal to the mole fraction of the solute. The vapour pressure of a solution of a non-volatile solute is equal to the vapour pressure of the pure solvent at that temperature multiplied by its mole fraction.
Negative deviation due to formation of Hydrogen bond between chloroform and acetone.
Negative deviation due to formation of Hydrogen bond between chloroform and acetone.
State Raoult’s law for the solution containing volatile components. What is the similarity between Raoult’s law and Henry’s law ?
Why a mixture of Carbon disulphide and acetone shows positive deviation from Raoult’s law? What type of azeotrope is formed by this mixture?
Define azeotropes. What type of azeotrope is formed by positive deviation from Raoult’s law ?
Give an example.
What type of intermolecular attractive interaction exists in the pair of methanol and acetone ?
State Henry’s law. What is the effect of temperature on the solubility of a gas in a liquid ?
Which of the following aqueous solutions containing 10 g of solute in each case, has highest m.p.?
(a) NaCl solution
(b) KCl solution
(c) sugar solution
(d) glucose solution
What is meant by positive deviations from Raoult’s law ? Give an example. What is the sign of H for positive deviation ?
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..
What are the transition elements ? Write two characteristics of the transition elements.
Define the following terms:
(i) Abnormal molar mass
(ii) van’t Hoff factor
Define the following terms :
(i) Mole fraction (x)
(ii) Molality of a solution (m)
The partial pressure of ethane over a saturated solution containing 6.56 × 10⁻² g of ethane is 1 bar. If the solution were to contain 5.0 × 10⁻² g of ethane, then what will be the partial pressure of the gas ?
Complete the following chemical equations :
(i) MnO₄⁻(aq) + S₂O₃²⁻(aq) + H₂O(l) →
(ii) Cr₂O₇²⁻(aq) + Fe²⁺(aq) + H⁺(aq) →