Mole fraction describes the number of molecules (or moles) of one component divided by total the number of molecules (or moles) in the mixture. Mole fraction is useful when two reactive components are mixed together, as the ratio of the two components is known if the mole fraction of each is known.

## What is mole fraction explain with example?

Mole fraction represents the number of molecules of a particular component in a mixture divided by the total number of moles in the given mixture. It’s a way of expressing the concentration of a solution. Mole Fraction formula.

## What is mole fraction class 12?

Class 12 Chemistry Solutions. Mole fraction. Mole fraction. Mole fraction can be defined as the ratio of number of moles of the component in the solution to the total number of moles of all components in the solution.

## What is mole fraction equal to?

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.

## What is mole fraction class 11?

Mole fraction is a unit of concentration. … The mole fraction is the number of moles of a specific component in the solution divided by the total number of moles in the given solution.

## What is the importance of mole fraction?

Mole fraction describes the number of molecules (or moles) of one component divided by total the number of molecules (or moles) in the mixture. Mole fraction is useful when two reactive components are mixed together, as the ratio of the two components is known if the mole fraction of each is known.

## How do you calculate Molality?

Molality Calculations

- The concentration of a solution can be given in moles of solute dissolved per kilogram of solvent. …
- Molality is given the symbol m.
- molality = moles of solute ÷ mass of solvent in kilograms m = n(solute) ÷ mass(solvent in kg)

## What is mole fraction of water?

Mole fraction of water vapor is the ratio of water molecules – to air and water molecules. Sponsored Links. The mole fraction of water vapor is the ratio of the number of mole of water vapor in the moist air – to the total number of mole of dry air and water vapor.

## What is Raoult’s Law Class 12?

Raoult’s law states that in a solution, the vapour pressure of a component at a given temperature is equal to the mole fraction of that component in the solution multiplied by the vapour pressure of that component in the pure state.

## Is Mole a unit of concentration?

Molarity (M) indicates the number of moles of solute per liter of solution (moles/Liter) and is one of the most common units used to measure the concentration of a solution. Molarity can be used to calculate the volume of solvent or the amount of solute.

## What is mole percentage?

Mole percent is the percentage of the total moles that is of a particular component. Mole percent is equal to the mole fraction for the component multiplied by 100: mol % a = Χa × 100.

## Can mole fraction be negative?

It is impossible to have a negative amount of moles. It is also impossible to have a negative mass of solvent. Therefore, it is impossible to have a negative molality.

## What is the unit of normality?

What is Normality? Normality is a measure of concentration that is equal to the gram equivalent weight of solute per litre of solution. Gram equivalent weight is a measure of the reactive capacity of a molecule*. Unit of normality is Eq/L.