# Mole Fraction Calculator

## Knowledge Base

Mole Fraction Calculator is a smart tool that has been designed to accommodate you in dealing with chemistry equations. Before going ahead to know about this calculator, let us provide you with the definition of "Mole" followed by the description of "Mole Fraction".

## What is Mole?

Being concerned with Chemistry, you must be aware of the terminology of Moles. If not, then we are here to let you know about it. In chemistry, Mole can be referred to as the measuring unit used to measure the quantities of atoms, molecules, or compounds present in a solution or mixture. The quantity of a mole is equal to 6.02214076×1023

In other words, a mole is a standard international unit used to measure the amounts of the atoms or molecules of the elements or substances that react to form new substances as a result of a chemical reaction.

Precisely, we can refer to a mole as the amount of the fundamental units (atoms, molecules, etc.) of a substance that reacts with another element/substance to form a new substance. You can calculate the number of moles using the formula:

$$mole = \frac{mass}{molecular weight}$$

Before jumping onto the definition of Mole Fraction, you must be aware of the phenomenon to which it is concerned. What we are calling here a phenomenon is "Chemical Reaction". You must have knowledge about the chemical reactions: what are Reactants, and how these react to form products.

## Know More about Moles Through Chemical Reactions

A chemical reaction involves the transformation of two or more substances from one form to another as tends to combine with each other. The substances that are to be transformed and combine with each other are what we call Reactants. On the other hand, the new substance that is formed as a result of the reaction or the combination of the reactants is known as Product(s). In the case of a solution or mixture, we can refer the reactants as solute and solvent that combine to form a solution or mixture.

Now, let us throw light on the smallest units of the reactants or the products which in turn is concerned with the mole fraction.

The smallest units of the reactants or products can be referred to as the atoms or molecules that are the composite of the respective substance. These smallest units are weighed as moles as we have already discussed in the upper section.

Now, you must have gotten the idea that moles are the quantity of atoms or molecules that are the smallest units of the reactants or the solute/solvent.

## What is the Significance of the Known Value of Moles?

Having the known value of moles of the substances that combine to form a solution/mixture or a product can assist you in figuring out the ratio of the reactant substances. Whereas the ratio of reactant substances (solute, and solvent) is what we call "Mole Fraction".

## What is Mole Fraction?

Mole is the number of fundamental units of reactant substances involved in a chemical reaction whereas the fraction is referred to as the division of proportion of the reactant substances, respectively. Therefore, we can say that Mole Fraction is the ratio of the reactant substances that react/combine to form a product.

## Why it is Necessary to Know Mole Fraction of a Chemical Reaction?

As Mole Fraction is the ratio of the reactants, having the values of the moles of the reactants known, you can evaluate the concentration of each reactant involved in a chemical reaction. In turn, having the value of the concentration of the substances known can help you in analyzing and balancing the chemical reactions properly.

## How to Calculate Mole Fraction?

By dividing the moles of each reactant with the moles of all reactants, you can calculate the Molar Fraction of respective reactants. Simply, you can calculate the mole fraction by just diving the moles of each reactant with the total number of moles of the whole number of reactants that combine to form the product, solution or mixture.

In other words, the division of the number of moles of the solute with the number of moles of both solute and solvent is equal to the mole fraction of the respective solute in a chemical reaction or solution.

For example, if you have 1.33 moles of hydrogen and 0.6 atoms of oxygen in a water molecule then you can calculate the molar fraction of each reactant (hydrogen and oxygen) using the molar fraction formula as:

$$\frac{1.33mol}{1.93mol} = 0.68$$

$$\frac{0.6mol}{1.93mol} = 0.31$$

So, 0.68 is the molar fraction of hydrogen, and 0.31 is the molar fraction of oxygen in a water molecule.

(Whereas, 1.93 is the total number of moles of the reactants:1.33mol+0.6mol= 1.93mol)

To calculate the molar fraction of any substance, all you have to do is to know the value of the moles of the respective substance.

## Use Mole Fraction Calculator for Quick Results

Although you can calculate the molar fraction manually using its formula, it's quite time-consuming. You can calculate the molar fraction of any desired substance using this smart tool.

Follow these directions to use Mole Fraction Calculator:

First Step: Place the number of moles of the substance (the molar fraction of which you want to calculate) in the box "ELEMENT WEIGHT".

Second Step: Place the number of moles of the other substance involved in the chemical reaction in the box titled "DISSOLVED IN". Third Step: Press CALCULATE to find out the molar fraction

(You can also add the weight of the substances in grams but along with it you will have to add the number of moles of the substances as well)

The usage method of this calculator is easy. This calculator works quite differently than the formula of the molar fraction. You don't have to put the value of the total number of moles of the reactants. Rather you just have to place the number of moles of the substances, respectively as per the given directions.

### Example

Let's consider the above-mentioned example to make you understand how to use this calculator properly.

If you want to calculate the molar fraction of Hydrogen then you will place the number of moles of Hydrogen (1.33mol) in the Element Weight box, and the number of moles of Oxygen (0.6mol) in the Dissolved in Box. Then click the Calculate Button that will provide you with the molar fraction of Hydrogen as "0.68".

On the other hand, if you want to calculate the molar fraction of oxygen in a water molecule then you will add the number of moles of Oxygen (0.6) in the Element Weight box, and Dissolved in Box will be filled with the number of moles of Hydrogen (1.33mol). Then by pressing the calculate button, you will get the molar fraction of the Oxygen in a water molecule as "0.31".

We hope that this Molar Fraction Calculator will help you a lot, so, all the best for your chemical equations things!