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**Table of Content**

The mole ratio calculator calculates the ratio of moles between reactants and products based on the balanced chemical equation of the reaction.

**“Mole ratio is a conversion factor that proportionally relates the amounts of chemical substances involved in a reaction**

**SI Unit:** Mole

**Mole Ratio = Moles of Reactants/Moles of Products**

The values here come from the coefficient of the chemical reaction.

Consider the following balanced chemical equation:

\({N_2} \left( g \right) + 3{H_2} \left( g \right) \rightarrow 2{NH_3} \left( g \right)\nonumber\)

The reaction has 6 mole ratios, elaborated as:

\(\begin{array}{ccc}\dfrac{3 \: \text{mol} \: {H_2}}{1 \: \text{mol} \: {N_2}} & or & \dfrac{1 \: \text{mol} \: {N_2}}{3 \: \text{mol} \: {H_2}} \\ \dfrac{1 \: \text{mol} \: {N_2}}{2 \: \text{mol} \: {NH_3}} & or & \dfrac{2 \: \text{mol} \: {NH_3}}{1 \: \text{mol} \: {N_2}} \\ \dfrac{3 \: \text{mol} \: {H_2}}{2 \: \text{mol} \: {NH_3}} & or & \dfrac{2 \: \text{mol} \: {NH_3}}{3 \: \text{mol} \: {H_2}} \end{array}\nonumber\)

**Related:** If you have any reaction that is unbalanced, you can use the balancing chemical equations calculator to balance it.

Calculating mole ratios helps to estimate the theoretical yield of a chemical reaction. To calculate it, follow the steps below:

- Balance the chemical equation
- Separate the coefficients of reactants and products
- Determine their ratios to get the answer

Consider you have the following reaction:

\({N_2} \left( g \right) + 3{H_2} \left( g \right) \rightarrow 2{NH_3} \left( g \right)\nonumber\)

If 5.83 moles of hydrogen reacts with the excess amount of nitrogen, how many moles of ammonia will be produced after the reaction completes?

**Step # 01: Write the Given Values**

Moles of \(H_2\) = 5.83

**Step # 02: Now Write Down the Unknown Quantity**

Moles of \(NH_3\) = ?

**Step # 03: Identify the Nature of the Problem**

The given reaction is converting \(H_2\) into \(NH_3\) moles. So we will ignore the \(N_2\) completely. Our main concern is to find a conversion factor that allows us to write \(NH_3\) in the numerator and \(H_2\) in the denominator.

**Step # 04: Solve**

\(5.83 \: \text{mol} \:{H_2} \times \dfrac{2 \: \text{mol} \:{NH_3}}{3 \: \text{mol} \:{H_2}} = 3.88 \: \text{mol} \:{NH_3}\nonumber\)

Using our calculator lets you understand the stoichiometric relationships between the chemical species in a reaction. Learn how to use the tool to obtain accurate and instant results for molar ratios.

**Step 1:**Add the stoichiometric values for the given reactants/products into this tool-sections.**Step 2:**Click “**Calculate**” button**Step 3:**This calculator shows the Molar ratio for each reactants/products for the selected coefficients

As seen from the following balanced equation:

\(2H_2 + O_2 ⟶ 2H_2O\)

**Mole Ratio = 2:1**

- Calculate the moles of the first substance from its given mass and molecular mass
- Do the same for every other substance in the reaction
- Calculate the mole ratio as per the formula aforementioned