Percent Yield Calculator
Reaction yield as a percentage of the theoretical maximum, with the loss and the moles involved.
Results
Percent yield
80.0000
%
Mass
1.7000
g
Amount of substance
0.037744
mol
Amount of substance
0.047180
mol
What this tool does
A yield above one hundred percent does not mean the reaction over-performed; it means the product is still wet, or contaminated, or was weighed before drying. Below that, the missing mass went into side reactions, unreacted starting material, or was simply left on the glassware.
Formula
yield = obtained mass ÷ theoretical mass × 100
Variables
| Symbol | Meaning | Unit |
|---|---|---|
ac | Mass obtained | g |
th | Theoretical mass | g |
mm | Molar mass | g/mol |
Y | Percent yield | % |
LO | Mass | g |
NA | Amount of substance | mol |
NT | Amount of substance | mol |
Worked example
- Mass obtained6.8 g
- Theoretical mass8.5 g
- Molar mass180.16 g/mol
- Percent yield80.0000 %
- Mass1.7000 g
- Amount of substance0.037744 mol
- Amount of substance0.047180 mol
Limitations
- For work that must comply with a standard or be signed off, check the result against the applicable code and have it reviewed by a qualified engineer.
- The result is an estimate based only on the values you type. Real situations often include factors this calculator does not know about.