8H Limiting Reactants

Front

What is a limiting reactant?

Back

the reactant that determines how much product can be made

Front

You need 2 pieces of bread, 1 tablespoon of peanut butter, and 2 tablespoons of jelly to make a sandwich. If you have 10 pieces of bread, 4 tablespoons of peanut butter, and 20 tablespoons of jelly, what is the limiting reactant?

Back

peanut butter

Front

When 12 moles of O₂ reacts with 1.1 mole of C₁₀H₈, what is the limiting reactant? C₁₀H₈ + 12 O₂ → 10 CO₂ + 4 H₂O

Back

Oxygen

Front

Use the equation 2 Al + 3 Cl₂ ---> 2 AlCl₃.  If 2 moles of aluminum and 2 moles of chlorine are reacted, identify the limiting reactant.

Back

Cl2

Front

CH₄ + 2H₂O --> CO₂ + 4H₂
What is the limiting reactant when 20g CH₄ react with 15g H₂O?

Back

H₂O

Front

Fe + S → FeS
If 7.62g Fe react with 8.67g S, what is the limiting reactant?

Back

Fe

Front

SO₂ + PCl₅ --> SOCl₂ + POCl₃
How much SOCl₂ is produced when 16.2g SO₂ react with 13.7g PCl_5? 

Back

7.87g

Front

The limiting reactant

Back

is used up first

Front

Use the equation 2 Al + 3 Cl₂ ---> 2 AlCl₃.  If 2 moles of aluminum and 2 moles of chlorine are reacted, identify the limiting reactant.

Back

Cl2

Front

When does a chemical reaction stop?

Back

When the limiting reactant is used up