How to

### How to Find Theoretical Yield of a Chemical Reaction

How to find theoretical yield: This blog is dedicated to the chemistry of organic reactions, specifically, the determination of the theoretical yield of a chemical reaction. This site contains information for all levels of students, from high school to graduate.

In chemical calculations, the theoretical yield is calculated by multiplying the molecular weights of the reactants by the molecular weights of the products. Moreover, the limiting reagent is the reactant with the lowest molecular weight and the shortest runout time. The limiting reagent is also known as the limiting agent.

## What Do You Know About Calculating percent yield?

Calculating percent yield from theoretical yield is the process of comparing an actual yield with a theoretical one. The actual yield is usually lower than the theoretical one due to competing reactions, incomplete reactions, and loss of samples. However, there are some cases where the actual yield is greater than the theoretical yield.

The actual yield of a chemical reaction is called the percent yield. On the other hand, the formula for this number has two parts: the theoretical yield and the actual yield. Plugging the two values into the formula will yield the percent yield. Using a smart calculator, you can determine the percent yield. This can save you time and effort. However, in a laboratory, the yield is a percentage of the number of products produced. The theoretical yield of a chemical reaction is 1 mol. The actual yield of the same reaction is 0.55 mol.

The actual yield is usually much less. A number of factors affect the actual yield. However, the process may be incomplete, there are impurities in the reactants, or the reaction could have gone awry.

## How To Find Theoretical Yield from a Chemical Reaction

Theoretical yield is the amount of product that could be produced from a chemical reaction. However, it is calculated using a balanced chemical equation and is the maximum amount that could be obtained. To calculate theoretical yield, we first need to calculate the mole ratio of the reactants. Once we have the mole ratio, we can use the formula to calculate the theoretical yield.

The theoretical yield is expressed in moles of product or mass units. Moreover, it is equivalent to the product’s molecular weight divided by the number of moles of reactants. The limiting reagent will be a part of the reaction, and it’s the one that reacts first.

It is calculated using the mole ratio, or mole fraction, of the reactants and the products. On the other hand, this means that if a reaction results in a reaction that produces three moles of calcium oxide from a given mass of calcium carbonate, it would be a theoretical yield of 36.7 grams.

People calculate the theoretical yield for a simple chemical reaction, But the problem arises when side products are produced. In this case, the limiting reagent method is not as accurate, and the ratio between products is not the same.

### Example of Calculation

Find the theoretical yield of geranyl formate production from 375 gram of geraniol. A chemist makes geranyl formate using 375gram of raw material and 417gram of refined product. The yield percentage is quoted as 94.1% of geranyl formate.

Solution:

A yield of 417g is achieved, which is the amount of product intended.

The percentage yield is 94.1%

Theoretical yield = (Actual yield/percentage yield) x 100

= (417 / 94.1)100

## How to Find Theoretical Yield Through Stoichiometry

Stoichiometry is a mathematical process for calculating the theoretical yield of a chemical reaction. However, it involves using the chemical formula of a compound to determine the number of moles of each reactant. This yield is divided by the density or volume of the compound in the case of solid and liquid chemical reactions.

The theoretical yield of a chemical reaction is the maximum amount of the product that can be produced from a certain amount of limiting reactant.

• To find this value, we first calculate the limiting reactant.
• This limiting reactant is identified by the balanced chemical equation, which contains the limiting substance.
• Next, we calculate the theoretical yield by using a stoichiometric chart.

When using stoichiometry to find theoretical yield, it is necessary to use the mole ratios of the reactants and products. By using the mole ratios, we can convert the moles of reactants into grams of products. In this way, we can find the maximum amount of product that can be produced.

## How to Calculate Actual Yield in Theoretical Yield

The actual yield, or product yield, is the percentage of the reaction product produced in a laboratory. It is necessary to ensure that the actual yield equals the theoretical yield. Also, the percent yield should be expressed in the same units as the theoretical yield. For example, if 12.0 grams of glucose react with oxygen, the product will be 6.50 grams of water. Oxygen is the limiting reagent in this reaction.

## Conclusion

The theoretical yield of a chemical reaction is the maximum amount of a product that can be produced from the reactants. Moreover, this is expressed in moles. It is determined experimentally or calculated theoretically. However, there are two ways to increase the theoretical yield of a reaction: Increase the temperature or pressure. There is no limit to how high the theoretical yield can go.