The concentration unit used in Raoult's Law calculations is???
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partial pressure and mole fraction
The concentration unit used in Raoult's Law calculations is called mole fraction (also known as the partial mole fraction or fractional mole composition).
To determine the mole fraction, you need to know the number of moles of the solute and the number of moles of the solvent in the solution.
The mole fraction (X) of a component is calculated by dividing the mol amount of that component by the total number of moles in the solution. Mathematically, it can be expressed as:
X = moles of component / total moles of all components
For example, let's say you have a solution consisting of two components: a solute (S) and a solvent (V). The mole fraction of the solute (XS) would be the number of moles of the solute divided by the total number of moles in the solution:
XS = moles of S / (moles of S + moles of V)
Mole fraction is a dimensionless quantity and is often expressed as a decimal or a ratio.
Raoult's Law describes the vapor pressure of an ideal solution as the sum of the vapor pressures of each component multiplied by its mole fraction in the solution.