Created By : Rina Nayak

Reviewed By : Phani Ponnapalli

Last Updated : May 17, 2023

By using a theoretical yield calculator we can find the theoretical yield of a chemical reaction. To get the theoretical yield as output, we need to give inputs i.e actual yield and percent yield and then click the calculate button. The output of theoretical yield as per provided inputs.

Percent yield(Yp)
%
Actual yield(Ya)
Theoretical yield(Yt)

### Theoretical Yield, Actual Yield, Percentage Yield - Definitions

The maximum amount of product obtained when all the limiting reagents have reacted is called theoretical yield. It is based on limiting reactants. A chemical reaction rarely produces the theoretical yield of a product. The actual amount of product made when the reaction is carried out is called actual yield. It is always less than theoretical yield , because of incomplete reactions, impure reactants, side reactions,etc and Can never be greater than theoretical yield.

The percentage yield is the ratio of the actual yield to the theoretical yield expressed as a percentage and is almost always less than 100%. Percentage yield is dependent on theoretical yield, experimental yield, experimenter’s technique.

### Theoretical Yield Formula

The theoretical yield formula is given by Theoretical yield = (actual yield / percent yield)* 100%

Theoretical yield in another terms can be expressed as Mass of the product = molecular weight of product*(moles of limiting reagent in reaction*stoichiometry of limiting product)

Where, Moles of limiting reagent in reaction = mass of limiting reagent / molecular weight of limiting reagent.

stoichiometry of limiting product = stoichiometry of limiting reagent

### How to use Theoretical Yield Calculator?

Go through the simple steps to find the theoretical yield of a chemical reaction easily by using a theoretical yield calculator.

• Enter the values of actual yield and percentage yield from the given question.
• Click on the calculate button.
• Finally you will get the theoretical yield of the chemical reaction.

### Theoretical Yield Examples

Question 1:

Calculate the theoretical yield of sodium sulphate when 32.18 gm of sulphuric acid is reacts with excess of sodium hydroxide to produce 37.91g of sodium sulphate, percentage yield is given as 81.37 %?

Solution:

Given that,

Actual yield = 37.91g

Percentage yield =81.37%

Theoretical yield = (actual yield / percent yield)* 100%

= (37.91/81.37)* 100

= 46.59g

The theoretical yield of the given reactant is 46.59

Question 2:

Calculate the theoretical yield of a product, actual yield of reactants is 42.0g and percentage yield is given as 84%?

Solution:

Given that,

Actual yield = 42 g

Percentage yield = 84%

Theoretical yield = (actual yield / percent yield)* 100%

= (42/84)*100

= 50 g

The theoretical yield of the given product is 50g

Question 3:

Calculate the percentage yield, if the actual yield of a compound is 0.198g and the theoretical yield is 0.217g?

Solution:

Given that,

Actual yield = 0.198g

theoretical yield = 0.217g

Theoretical yield = (actual yield / percent yield)* 100%

Percentage yield = (actual yield /theoretical yield )* 100%

= ( 0.198/0.217)*100

= 91.20%

The percentage yield of a given compound is 91.20%

If you would like to learn more about the other chemical calculator that gives instant results, stay tuned to Chemistrycalc.Com

### FAQ’s on Theoretical Yield Calculator

1. What is meant by theoretical yield?

The theoretical yield is the maximum possible mass of a product that can be made in a chemical reaction. The theoretical yield is based on limiting reactants.

2. Why is theoretical yield important?

The higher the percentage yield is, the more efficient the reaction.so the percentage yield of a chemical reaction is important.

3. What does a low theoretical yield mean?

Percent yield is lower than 100% because the actual yield is often less than the theoretical value. Reasons for this can include incomplete reactions and loss of sample during recovery.

4. What is the formula for theoretical yield?

Theoretical yield is equal to actual yield is divided by percent yield and multiply by 100 %. Theoretical yield = (actual yield / percent yield)*100%

5. What is meant by actual yield?

The actual yield is the quantity of a product that is obtained from a chemical reaction.

6. What is the theoretical yield used for?

Theoretical yield is helpful to know how much product will be produced with given quantities of reactants.

7. What is meant by percentage yield?

The ratio of the actual yield to the theoretical yield multiplied by 100. % yield = (actual yield /theoretical yield) * 100