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)
Define the following terms:
(i) Ideal solution
(ii) Molarity (M)
What are colligative properties? Write the colligative property which is used to find the molecular mass of macromolecules.
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 ?
Explain why on addition of 1 mol of NaCl to 1 litre of water, the boiling point of water increases, while addition of 1 mol of methyl alcohol to one litre of water decreases its boiling point.
Define an ideal solution and write one of its characteristics.
Define azeotropes. What type of azeotrope is formed by positive deviation from Raoult’s law ?
Give an example.
Derive expression for Raoult’s law when the solute is non-volatile.
State Raoult’s law. How is it formulated for solutions of non-volatile solutes ?