Question

Define mole fraction of
binary solution and how & related to relative
lowering of Vapour pressure​

Answer 1

Explanation:

According to Raoult's law, for dilute solutions containing non volatile solute, the relative lowering of vapor pressure, Δp/po is equal to the mole fraction of solute, X2. ... * The lowering of vapor pressure is proportional to the mole fraction of solute or inversely related to mole fraction of solvent.

Answer 2

The answers to the following questions are as follows:

• A mole fraction is defined as a unit of concentration.
• Also, in the solution, the relative amount of solute and solvents are measured by the mole fraction and it is the number of moles of a specific component in the solution which is divided by the total number of moles in the solution.
• Moreover, the relative lowering of vapour pressure is always equal to the mole fraction of the non volatile solute.
• The mole fraction is a unitless expression and the formula is given by xi = ni/ntot, where x(i) is the mole fraction, n(i) is the amount of a constituent in moles and n(tot) is the total amount of all constituents in a mixture in moles.

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