A 1.00 molal aqueous solution of trichloroacetic acid (CCl3COOH) is heated to its boiling point. The solution has the boiling point of 100.8oC. Determine the van 't Hoff factor for trichloroacetic acid. (Kb for water 0.512 K kg Mol−1)
OR
Define the following terms:
(i) Mole fraction
(ii) Isotonic solutions
(iii) Van 't Hoff factor
(iv) Ideal solution
110g of salt is present in 550g of solution. Calculate the mass percentage of the solution.
Column-I | Column-II |
(a) Kinetic energy | (p) Mole fraction |
(b) Partial pressure of a gas | (q) Density |
(c) Rate of diffusion | (r) Molar mass |
(d) Vapour pressure of a liquid | (s) Absolute temperature |
n-butane , C_4 H_{10} | n-pentane , C_5 H_{12} | |
Vapour pressure | 1800 Torr | 600 Torr |
Calorific value | 2800 kJ /mol | 3600kJ /mol |