Question

Define the mole fraction of a substance in
solution.​

Answer 1

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$<b><marquee behavior="alternate">Mole Fraction</marquee>$

Mole fraction:-

■Mole fraction is defined as the no of moles in the component of a substance to the total no of moles.

■ Moles fraction = no. of moles of solute/no. of moles of solution

              =no. of moles of solute/no of moles of solute+no of moles of solvent

■Mole fraction is another way of expressing the concentration of a solution or mixture.

■ It is equal to the moles of one component divided by the total moles in the solution or mixture.

■Mole fraction is used in a variety of calculations, but most notably for calculating partial pressures.

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Answer 2

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Mole fraction is a unit of concentration, defined to be equal to the number of moles of a component divided by the total number of moles of a solution. Because it is a ratio, mole fraction is a unitless expression. The mole fraction of all components of a solution, when added together, will equal 1.