Chemistry
Theoretical yield from the limiting reagent
How the theoretical mass is obtained from the balanced equation.
The Formula
theoretical mass = moles of limiting reagent x mole ratio x product molar mass
How the theoretical mass is obtained from the balanced equation.
| Symbol | Meaning | Unit | Notes |
|---|---|---|---|
| n limiting | Moles of limiting reagent | moles | The reagent that runs out first. |
| r | Mole ratio | unitless | From the balanced equation, product over reagent. |
| M product | Product molar mass | grams per mole | The molar mass of the product. |
What Each Symbol Means
n limitingmoles
Moles of limiting reagent
The reagent that runs out first.
runitless
Mole ratio
From the balanced equation, product over reagent.
M productgrams per mole
Product molar mass
The molar mass of the product.
See It Worked With Real Numbers
A formula on its own does not tell you which number goes where. The how to calculate percent yield page applies this equation to a concrete case, shows every intermediate step, and names the mistakes that produce a wrong answer even when the algebra is right.
Where This Formula Appears
This equation is the working core of How To Calculate Percent Yield, filed under Science. Every number the guide produces comes from substituting into this one line.