vapour pressure of solutions

Vapour Pressure of Liquids - Vapour pressure is defined as the partial pressure exerted by the vapors above the liquid surface in equilibrium with liquid at a given temperature. fig 3.3 In illustrations 1a and 1b, the liquid and vapor states of a gi..

. In such a state, although the amount of liquid level in the vessel does not change, evaporation has not stopped and the system is not at rest. In fact, the number of molecules, which escape from the liquid to the gaseous phase (due to evaporation), becomes equal to the number of vapour ..

Let us suppose a small amount of a non-volatile solute (sugar) is dissolved in a solvent (water). When evaporation of this solution takes place, only water evaporates as the other component (i.e., sugar) is non-volatile. The vapor pressure of the solution is..

Solubility of a gas in a liquid increases with the increase in partial pressure of the gas above the solution. Quantitatively, this is governed by Henrys law, which states that at constant temperature. The mass of a gas dissolved in a given volume of the liquid is directly pro..

According to the Le Chatelier's principle, this will make the system move in a direction of lower volume. An increase in pressure on the system will result in the condensation of vapours to give liquid, since, liquids have lower volume as compared to vapours. The equi..

The total vapor pressure, P exerted by the solution is the sum of P A and P B as required by Dalton's law of partial pressures. P = P A + P B or P = P o A c A + P o B c B = P o A (1- c B ) + P o B c B [because c A + c B = 1] = P o A - P o A c B + P o B c B P = (P o B -..

When a liquid is placed in an open container it disappears completely after some time. However, when the same liquid is placed in a closed container, even after a long period only a part of the liquid disappears. The obvious difference is that the vapours of the liquid held in an open con..

Liquids having higher vapour pressure are: (a) Alcohol (b) Water (c) Petr..

Osmotic pressure is the pressure required to prevent the net movement of pure water into a solution so as to prevent the volume of the solution from increasi..