iGCSE Topic 1e Percentage Yield DOUBLE REVISION MCT

Percentage yield = ( ​ (a)   ​ (b)   ​ ​ (c)   ) ​ (d)   100

• actual mass
• theoretical mass

A reaction produces 30 g of product

The theoretical yield was 50 g

What is the % yield?

A reaction produces 10 g of product

The theoretical yield was 25 g

What is the % yield?

A reaction produces 140 g of product

The theoretical yield was 200 g

What is the % yield?

N₂ + 3 H₂ --> 2 NH₃

A reaction produces 60 g of NH₃. The theoretical yield is 300 g.

What is the % yield?

2 Mg + O₂ --> 2 MgO

The theoretical yield of magnesium oxide in a reaction is 500 g

The actual reaction only produces 450 g.

What is the % yield?

• % yield
• theoretical mass