solutions concentrartion and water vapor pressure

Vapor Pressure of Solutions - 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., su..

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 pressur..

>In terms of symbols, But x A + x B = 1 or x A = 1-x B (2) From equations (1) and (2) Rearranging In the above equation p A o - p s represents lowering of vapor pressure a..

A known mass W B of the non-volatile solute is dissolved in a known mass (W A ) of the volatile solvent to prepare a dilute solution and relative lowering of vapor pressure is determined experimentally. Knowing the molecular mass (M A ) of the solvent, mole..

>If mole fraction is used to represent the solubility of the gas in the solution, th..

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 given substance are represented. The indi..

The pressure built up inside the cells as a result of the entry of water is called osmotic pressure. The entry of water into the cells is regulated by the solutes in the cell. Less concentration of solutes means more concentration of ..

The increase in pressure increases the water potential. If a pressure greater than atmospheric pressure is applied to pure water or a solution, the water potential can be raised from zero to a positive valu..

The excess pressure that must be applied to the solution/conc.solution to prevent osmosis. fig 3.11 - Principle of measuring osmotic pressure fig 3.12 If two solutions of identical composition but different concentration are separated by a semi permeable memb..

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